If only a few websites had the banner, then maybe I'd blame those websites. But when they virtually all do, I blame the law.
I'd say >90% of cookie banners break the law. It's just that enforcement is only slowly catching up. We have already seen a couple of cases and I expect that as soon as there have been more rulings banners will start to dissappear or become much simpler.
I've never heard anyone suggest that.
(And them becoming "simpler" is irrelevant. As far as unwanted interruptions go, a popup is a popup.)
So it's not like I trust anything either way. Get rid of the popups. Any solution needs to be legal and not involve popups.