I don't have the same experience. My main bank is a huge European bank, and their app is laughably bad. You have to jump to an impressive number of screens to reach anything other than "last / upcoming transactions" lists. Many are actually just janky webviews, yet they still somehow manage to work worse than their website. Bonus points for it being "temporarily under maintenance" seemingly every other day.

I should note that the website is pretty janky itself, but at least it works fine (meaning "not worse") on Firefox on Linux, and it doesn't even pester me to change browsers or anything.

I also have an account with one of those new "online" banks for when I travel, since they have better exchange rates, and, importantly, no conversion tax. Their app is somewhat better, but they have no website whatsoever, AFAIK. But, at least, they allow me to set up a proper password instead of clicking on 6 digits as the other bank.