Yeah there's a part of me that enjoys explanations for why things are happening or showing up now. But sometimes the best explanation is just "it was there all along and just didn't mix with the plots being shown"I think its just because its an incredibly convoluted explanation. It aggravates me the same way as the people who insist that the only possible way that mutants can be introduced is if there is some big multiverse convergence or "infinity gem radiation". Its like they cannot accept that the MCU might not match the version in their heads so they have to preserve their own headcanons above the content of the show.
It also reminds me of Doctor Who in the eighties, where the shows lore had become extremely dense and the writing team were all fanboys so you would have these episodes where the characters sat in a room meticulously explaining plot points so the writers could justify their own fan theories