I would say Bitcoin has the same issues as TCP/IP in 1984. It's just 10 years old. Developers know what to do (Eltoo, Schnorr signatures, better multisig for hardware wallets, watchtowers, better routing, AMP, Lightning support for exchanges), but implemention speed is limited, and just simply adding more developers or even complaining about lack of UX won't make it faster. Also people with Bitcoin don't accept the ,,move fast and break things'' mantra, because it's money. I like the cautious speed of development, it helps build my trust in Bitcoin.