- Browsers and the web becoming less painful to work with out of the box. If we all keep using jQuery, will these issues it fixes ever be addressed?
- Dependencies that hang around for a long time tend to increase technical debt or fear of common dependency-related issues
- A huge part of membership in a community involves signaling. Some of that signalling means syncing with what isn't liked, and speaking against it.
So you can get some people who want to live in a better world, some who want to be less annoyed by clutter they don't need, and others who just want to belong...and they see jQuery as a cheap ticket, especially if they aren't using it.
Still, jQuery is like any tool, best used by those who have a plan for working around the troublesome aspects...