sounds like reddit want to kill all third party apps which is a bit unfortunate but this business practice is not very uncommon (Apple/Google with their 30% fees).
If Reddit does want to kill all third party apps complaining about how they haven't done a single thing to actually support 3rd party developers is kind of moot. But the point of the protest is how underhanded that is; they would be manipulating users and developers by lying about the whole thing. And if they actually didn't want to kill all third party apps then they still lied and are also incompetent.