From the POV of doing literally anything for the environment, yeah it's just trash. If we're going to bash websites for being overly complicated and costing their organizations millions a month on EC2 Bezos Bucks, making the web unusable for people with screen readers, password managers, RSS feeds, web archives etc then yeah, be my guest. Destroy it all.
Yeah generally simper web pages are much better for people with accessibility issues. When everyone adds tons of weird JavaScript garbage on top then it's very hard to make tools that work reliably on the pages