If he is here only to leave links, I would suggest to the moderators to disable it until he reaches at least Hero rank. Writing useless posts to get backlinks for obscure sites is quite tiring for regular forum users.
Haha why impose such a rule only on this member he will get offended hehe. Well if he wants to do it there are referral sections on this forum where he could do this, but posting links that can hurt other people is not good and must be prohibited. This forum is gaining some traffic but still, it has some juice to pass other low-ranked sites seeking for such juice to increase their PA and DA. But for now, OP might be asking for advice only and I am sure he gets the idea that he must be extra careful while sharing links.
LOL, sounds funny. However, what you said is the fact because posting links is not the ultimate when learning as a newbie because some links can have malware which as a newbie he will not know and that will affect whoever click on the link to open it. I don't click links posted in the forum by low rank members and I only click on links that are posted by forum members that I trust just to be sure that I am safe.
Don't just say that, in public where every low-rank member can read it. They are also humans hehe but your strategy is 50% right and the remaining 50% will become right when you become careful while clicking on links even coming from trusted to old members. And we can't shrink links here so they are what they are being shown to us therefore we can confirm the site by domain directly if its the link of some famous blog like coindesk etc.