If you think something like "open source is good" or "patent trolling is bad" and you want to advocate for those things, you should want to maximize your reach and do what you can to demonstrate that these are not inherently partisan issues, because if people start to perceive that the things that the EFF cares about are bound up with partisan ideology, then it will be dismissed as such.

(It's also buying into the narrative that X is a ideological monolith. It, of course, is not. But it does lean a different way than other major social media platforms, which means there's a unique opportunity to speak to a different kind of audience!)