It's a matter of perspective I guess. I've been negative about LotC since the day I joined, I'll be negative about it until I forget it exists, or die, whichever comes first. That doesn't make me a doomer. I've gotten a whole lot of enjoyment out of LotC and the lore and community that came out of it. Even though I never log on, it's a treat to occasionally open the forums and read other people's RP posts, to try and piece together what's happened in the of world of [INSERT 5-LETTER WORD THAT STARTS WITH "A"] since I left it behind.
I think you're generally right that LotC hasn't changed that much, and that the majority of the changes have been positive (safety for one, obviously). There are obviously people here who care about this server a lot, much more so than me.
But LotC has always sucked! It will always suck! It's always been an ad hoc, cringeworthy, make-up-the-rules-as-you-go-along kind of place. I'll call you on people healing maimings through cloud temple suicide and getting amnesia from golden apples and raise you "*backflips off of roofs and shoots poisoned crossbow bolts at you," or elves tweaking off sugar, or dwarven boat paratroopers, or people replacing their arms and legs with "golem limbs" that let them lift you up in the air. These were good things! Fun, bizarre, emergent pieces of fiction that no one sat down and decided were canon. We either agreed on them or found them too stupid to argue with. If I wanted to read painstakingly crafted, internally consistent fantasy fiction, I would go do that. There's a lot to choose from. But that's not why I come here.
I come here because it's where I've read some of the most beautiful sentences I've ever seen someone write in the English language. Someone taking the prompt "you are an elf named Mayilu'taleh (which means "beloved rock" or somesuch in Elvish) in a fantasy world" and running with it from a place of pure improvisation and emotional honesty. I don't think you can separate LotC sucking, it being a minecraft factions server where people write fantasy escapism self insert fiction, from the things that make it a place for genuinely interesting creative expression.
You're right, the server has improved. The standards for writing certainly have, to the point where I would argue many of the people here should write their own original fiction. But when we start measuring the quality of roleplay by how extensively redlined and "balanced" the magic lore is, or how professional the builds and skins look, or how many words fit in a single minecraft emote, we lose a bit of what makes this community special. There's a particular strain of aloof zoomer "everything is cringe" attitude that rules on here, and it comes from a place of people not being allowed to roleplay what they want, having to lobby and scheme and bully other people to get to enjoy a sliver of it.
TL;DR : Server sucks freebuild now