Inasmuch as self custodial wallets are considered to be the safest when it comes to bitcoin storage, let's also consider what what happens when someone loses his private key, that means only one thing, all your funds are gone and can never be retrieved.
But a reputable exchange on the other hand could also offer strong security measures to protect your funds, and are also very easy to use too.

This is what a lot of people thought, before they lost all their money in a collapsed centralized exchange, if you are using BTC, you have a responsibility to protect your seed phrase and your funds, and if you are serious about it, you won't lose it. Many reputable exchanges have collapsed in the past, so how do you trust one with your funds, it is a stupid thing to do.

Plus, some of these exchanges also have insurances to cover for any losses, just incase something eventually goes wrong and you end up incurring some losses.

Mt.Gox's creditors are yet to get anything back, not that they are even waiting to get 100%, but they haven't even gotten anything at all. That's all i can say about what you just said.

This is FUD. This particular agency of the feds is very good at it. So, don't fall for this FUD, and keep using Bitcoin.

I agree, even mixers are not illegal, but the government is seriously going after them, we all know all of these things you mentioned is still legal, but the government is attacking BTC's fungibility and treating certain coins that go through privacy tools as 'tainted'.

And also exchanging your cryptocurrency for another kind of crypto is also legal, ID or no ID.

Better to do that on a p2p exchange. If you deposit coins that have been mixed or from a CoinJoin tx into a centralized exchange, it would be confiscated, even though mixers & CoinJoin are not illegal.

Interface, they could also include that in their witch hunt, everything that provided anything to anyone,  will again be at their arm's length.

Anything that provides privacy to people, and they also believe that most crypto services are being used for money laundering, so they are going after them all. I also believe they are witch hunting at this point, and every crypto service will be under their radar at some point, however i don't think they will care about crypto forums.

Good post mate. But I have used some or few Bitcoin mixers and there are notable differences in them, so what are those similarities or differences that unijoin mixer has that makes it stands out or fall short when being compared to other exchange.

If you want to understand more about Unijoin and how it works, check this link: https://unijoin.io/en/why-unijoin
In there you'll find out most of the things that makes Unijoin different.

How fast is the transaction on unijoin Bitcoin mixer.

You set the transfer delay yourself, you set the hours and minutes you want to receive the mixed coins into your receiving address. But your deposit tx must have at least two confirmations first, and then the delay time starts counting from there.

Just stumbled upon the same wallet. So it's a scam?

What do you think, surely it is scam, how did you stumble on this wallet, did someone recommend it to you, or did a scammer send you an unsolicited message recommending this wallet. Giving us info like this will help people, especially newbies, stay away from new wallets you are not sure of and ask questions if you do not know what you are doing.

Why would you keep your money where you do not have control over it, where it can be confiscated at anytime or lost in fractional reserve scam, know that not your keys is not your coins. Get a recommended, well reviewed and open source wallet to store your funds, and if you are storing a large amount, use an offline wallet, that is either a hardware wallet or an airgapped wallet.

Some weeks or like 3 months ago, we saw a news that senators told the SEC governor that he should stop approving crypto ETF. Let us wait and see what will happen.

Yeah, we would see; BTC spot etf's was delayed for a long time before it was finally approved, i don't really know when these institutions filed for their ethereum etf's, though i remember Blackrock filed for theirs (ishares Ethereum trust) in late last year. It may take a long time before we see an ethereum etf and the sec might reject all the pending applications.

Samourai Wallet was seized because they might have got something against them but it could also be true that the seized it just by representing it as a money laundering protocol.

The government will call every privacy solution a money laundering tool in this their fight against money laundering, if they cannot track the activities of its users or trace and link tx's, then they try to seize it and call it a money laundering tool. According to the government, they should know about every single thing you do with your money.