Your last sentence is contradictory with the meaning of “beating a dead horse” with the usage of the phrase I’m aware of.

To beat a dead horse isn to waste effort at an impossible or pointless goal.

When I used the phrase, it was with the second meaning in mind, but the first partially applies if op wanted anyone to do anything about the situation because the dev team isn’t exactly open to some kind of takeover. The most that could realistically happen is that everyone leave lemmy entirely. Except for the tankies, obviously, why would they leave?

Since anyone that has spent enough time on lemmy to be called a regular user has run across the whole issue at least once, that means that if OP was wanting to raise awareness, the post was also pointless in that regard because it’s kinda impossible to raise awareness past common knowledge and achieve anything useful.

Now, maybe our usage of the phrase “beating a dead horse” isn’t the same. Language is funny like that. Maybe you just disagree that the post has no point, or that the point it does have might achieve something useful. That’s cool, no worries, disagreements like that are healthy and fun.

I will say that in the first part of your comment, you actually echoed the point that I made; it is trivial to minimize/block instances in one way or another, including defederation. Defederation is an instance decision, not a personal one. But it is also a personal decision which instance/s we use to interact with the fediverse. There are instances that do not federate with lemmy.ml, and there’s a ton that don’t with lemmygrad.

So, based on that, I would even argue that, since we have the freedom to choose our instance (with the consent of the host of the instance of course), trying to get an instance that doesn’t already defederate from lemmy.ml to do so approaches pointless since all of the major instances have been around for a while now, and have already taken part in that debate. Maybe you could change someone’s mind with yet another rehash of the same debate, it does happen. But, again, all the major instances have had this debate multiple times, and the hosts don’t seem open to changing just because someone brings it up again.

New instances? Absolutely have to decide if they want to federate with any of the “iffy” instances. And every user has to decide if they’d rather stick with a given instance that doesn’t match their preferences regarding federation. But, uh, the instance this was posted on isn’t new. The user that posted it isn’t exactly new either. So the fact that they haven’t already made a choice, but instead decided to beat a dead horse (again, using the “pointless” rather than “impossible” usage of the phrase) seems a bit meh.