With Plex Pass you're paying for access to features that typically require Plex to maintain a server and so some sort of processing.

This is content provided by a third party. Plex clearly didn't want to negotiate with each provider, figure out a pay structure, then pass those costs along to Plex Pass subscribers for a feature they may or may not want to use.

Personally I see no value it in and don't plan to use it. I'd be upset if they demanded I pay more for that.