where is the contradiction?
The problem with that theory is that not knowing who Loki is means they haven’t ever pruned a Loki which seems highly suspicious if the TVA’s mission is the same across multiverses.
It seems more like this is the same TVA with a different mission. This Loki pruning wasn’t necessary.
They established that you can't change history...its not possible. All you can do is create branch realities. So a new Kang instantly taking over the TVA would be breaking that law.
Nevermind the fact that Loki was IN the TVA before Sylvie killed he who remains. If the TVA's entire history was changed at that point why didnt it effect Loki at all. Plus how could Sylvie push Loki into a TVA that had its history changed, prior to her causing the event that changes history. None of that makes any sense.
Based on what we know from the show and what's be established, this is what I'm thinking....
There was always parallel universes, even throughout all of this the multiverse still existed it was never just a single timeline. Its just that each timeline had it's version of the TVA protecting it from colliding with others and that's what the "redline" represented. In the opening animation we could see the time ring was what appeared to be multiple timelines stacked and flowing together. It even seemed to be isolated to that one black hole which means there could be other multiverses not connected to our multiverse at all. I doubt they animated that entire sequence just because it looked cool, there had to be meaning there. I think the infinite Kangs only cares about protecting their scared timeline they control and stopping them from intersecting.
This explains the whole issue with variants and the way they appear. Otherwise, Loki's variants being so drastically different didn't make any sense. That would mean someone deviated from the scared timeline at some point and that caused Loki to change from a frost giant to an alligator....
If the TVA are pruning deviations the moment they happen, how could something change in the timeline so drastically and so suddenly that causes Loki to turn into a damn alligator. That fact alone tells me the multiverse has always been there, it was just "neat" before episode 6 happened.