Do you also think Bitcoin Gold (BTG) is dying?
What makes you think it is still alive? 
Technically it's still alive since new block still created and you can trade it on exchange.
Let's call it zombie coin or failed necromancy project then because if we talk technically no coins is completely dead at any point since it can be resurrected by anyone with a copy of the blockchain.
In terms of protocol of the coin, i agree. But i also refer to other stuff such as fixing bugs and ensuring it's running properly on newer OS. For example, AFAIK it could be tricky to run old Mac apps on newer Mac OS. For windows, you also need to sign your installer with valid and non-expired digital signature if you don't want your user complain it's marked as suspicious by the OS or antivirus.
Yeah but you could delegate all of this to other developers if you coins is successful and not give a damn about it, look at what
Buttercup did with ETH, dogecoin is also running fine, let the other guys deal with wallets and clients. I don't remember doge having any major update since the merge mining and that was what, two years after launch? And no, I don't consider BIP44 anything major, before you even ask!

Simplicity always wins the race!