Ask HN: iPhone Chips vs. App experience

It is really great to see Apple announcing A14 Bionic chips with 5nm architecture... on the other hand, my iPhone 11 Pro still struggles to scroll Twitter (mostly text, a few auto-playing videos)...

Why is app optimization still such a poor experience? and what is the purpose of even faster chips when Software optimization still suffers like that...? Shouldn't list scrolling be better understood by now?

As a developer myself (but not a mobile developer) things like that feel incredible frustrating.