I think this rule is quite unfortunate. Wouldn't we all be better off if sites that hijacked back buttons were just banned or at least had their posts hidden until they're fixed?
Sure, they're somewhat common issues, but so are ads for malware served by Google. Surely we should call those out?
Honestly, I feel like browsers should handle this.
Sites are always going to do malicious shit. The browser should know that when I hit the back button I want to go to the place I clicked that brought me here. SPAs have severely perverted this simple idea, but I’m sure browser devs can figure it out.