Only the accessibility focused apps will be allowed by Reddit to continue as long as they aren’t monetized. Sure, if you want to allow blind people to read Reddit because we can’t figure out how to do it, go nuts. But only as long as you don’t expect anything for your time and effort.
And they didn’t just start serving ads, they started serving ads like the HeGetsUs campaign that were so poorly targeted that the community they’d built absolutely hated them.