Please tell me how much your loved Ethereum has been developed so far?
I'm not a lover of Ethereum. A look at my signature will give you a clue where my interests lie. Both the 2.0 coins in it have developed lots.
If you complain about lack of features, take up coding and go do them yourself. Anything that these alts provide can be added to Bitcoin.
I used to think that, too. They could be, but they won't be. Bitcoin will never adopt Proof of Stake, for example: I'll probably get mocked here for even suggesting it. If I were to write a Bitcoin node that supported multiple transaction types, nobody but me would run it. It'd be stuck on a lonely fork. In practice, only the core Bitcoin devs can make changes like that, and they aren't interested. They've not even fixed transaction mutability, despite it being a known problem (with known fixes) for months, if not years. All the interesting work with Bitcoin is being done on top of it, with wallets and the like, not with changes to the core.