> You would think FAANG would have a half decent UI and UX with the amount of money they have.
There is no point in sanding something that someone else is using hammer and chisel on. FAANGS are the companies of continuously delivered websites, self-updating evergreen software, churners of framework-du-jour that are deprecated sooner than you can say "FAANG". Even if took the time to sand something, it would be replaced by something else the following day.
I have no idea where you got this idea from. Can you give some examples showing that switching to a new framework is a common at FANGs?
Yes, frontend moves quickly and there is a new framework every day. No, most products teams at FANGs are not rewriting frontends in a new framework every year.
There is no point in sanding something that someone else is using hammer and chisel on. FAANGS are the companies of continuously delivered websites, self-updating evergreen software, churners of framework-du-jour that are deprecated sooner than you can say "FAANG". Even if took the time to sand something, it would be replaced by something else the following day.