Nothing can ever change that Shadowlands did to the lore, to the whole story basis, to the feel of WoW what Sylvanas did to Teldrassil. Burned it to the water-line, disrespected the inhabitants, left many of them scarred, left a permanent gaping wound in the world, destroyed a beautiful place with real history.
It ended any hopes for consistency and decent story from the WoW devs, it closed forever the door on Chronicles actually setting a decent foundation for the WoW lore that respected the original basis with a few necessary retcons which we were told would be foundational from then on and built on. That was easily, laughably brushed aside and tossed in the trash. It shredded one of if not the best story in the game which was the whole Arthas tale and that includes Sylvanas and her intersections with it.
So sure if the story is just set dressing and you don’t really think about what it looked like last week or 4 years ago and don’t care about consistency or being able to write a character that exists in that world or get in the headspace of that world. If you never cared for WoW as it existed from vanilla through at least Legion, the story, the feel, the fact that that game at that point in time had devs who despite their many faults were at least smart enough not to try and write out how the afterlife works and then show it to players and it’s ridiculous. If for you the game is just rushing through mythic dungeon content or whatever it is you do and retcons don’t bother in the least, living world doesn’t bother, beloved stories you cared for don’t matter, then sure it’s something that can be looked at through the lens purely of systems and problems with those of which there were plenty such as the disconnected zones, grinds, etc.
But to an RPer, to someone who started the game in BC which was another misfire from a lore health perspective but more easily siloed away from the rest of the story (as after all it’s pretty much been ignored while SL’s developments have been center-staged in the main story ever since) it was and will remain the worst expansion ever.
Even if they create an expansion in future that blows up Azeroth and transports all our characters to an outland-like fragmented floating remnant of it and completely wreck the class balance and just for giggles make Anduin, Sylvanas, Alleria, Khadgar, Thrall, Jaina, etc all dreadlords all the way down, that expansion STILL wouldn’t be as bad as Shadowlands and would have the redeeming quality of throwing out the rest of the already burnt and ruined lore with it and holding up to scorn anyone still pretending to care about story. I would respect them more for doing that and showing their contempt to their defenders and holding them up to scorn than what they’re doing continuing to build on the tumor that is SL lore which needs like all tumors to be excised.