Because local servers and plugs aren't the same thing.
I think this whole conversation is mixing two types of disagreements and is going to end poorly for that reason.
One disagreement is technical: can developers provide communities with a safe, functional iteration of their servers to deploy freely in such a way that discontinued games continue to operate?
The answer is "probably not". The devs speaking out aren't wrong about this. This requires rebuilding the entire concept of server architecture for games and centralized servers. Not only are older games probably unsalvageable for that process, but any game that is buying online services would be priced out and you'd end up with only the largest publishers being able to afford basic features like, say, matchmaking.
The other is of design philosophy: is it okay for live service games to exist in their current form, where they run for a bit of time and then, at the sole discretion of the IP owners, they go away with no recourse to ever run them again in any form, ever. Are we cool with that?
I am not. Some of these devs seem to be. I mean, they'd love if there was an alternative, but if the choice is between getting to have MMOs and quirky massive shooters they would rather keep the space deregulated and creatively available than restrict it.
The first one isn't much of a matter of opinion, but there are intermediate steps that can be taken. But because a bunch of people are disagreeing on the second issue with people who a) know a lot more than they do about the first disagreement, and b) aren't particularly inclined to meet them halfway on the second, we end up with this bit of entrenched online drama where ignorance, activism and disagreement is quickly becoming toxic.
I don't have an answer for this, other than maybe... please stop? That'd be nice.
I think the discussion about preservation of live games and consumer rights in server-based games needs to be had. But it needs to be mature and educated. The more the collapse of this petition turns into shitty, petty arguments full of disingenuous misrepresentations and misinformation (on both sides) the more inclined I am to say let it all die and maybe try again with a better understanding of what's being discussed, from scratch.