I think something to remember is that some communities on Reddit are essential and important to people's wellbeing. There are subreddits that help people get through cancer, or help people with depression and suicide. I help (as best I can) with a subreddit that helps people with access to what can be life changing and life saving medical cannabis. Reddit, as much as I despise social media and centralisation of power and knowledge can be the sole place some people go for support. Of course it shouldn't be that way, but that doesn't change what it is currently.
Because of this, protests aren't just about shitposts or cat subreddits or whatever that anyone can find somewhere else or restart on the Fediverse. It's also about trying to force Reddit's hand into improving what there is so that the essential subreddits can continue (at least for now until a better alternative is created and folks have finished migrating there such as what r/blind has done).
JunkMilesDavis