I find them to be good indicators of how bad a website/service is. The harder it is to dismiss the dialog while rejecting everything, the worse the service tends to be in other metrics. I think of those dialogs as big bright banners which advertise loud and clear how disrespectful a website is of its users. Noticing the pattern means I waste considerably less time on websites which aren’t worth it.
Me too, I wish the companies would obey the law without putting in the consent banner. It's not like there's any law obliging them to put in the consent banners. They freely chose to piss us all off even though they had the alternative of behaving like perfectly profitable pre-internet businesses and ... not tracking us.
Yes, I can't believe we've created a system where those are the norm. But we also have real world cities plastered with billboards, so it's not like everything is clean, perfect and rational in our worlds.