Saved me some typing, there! There was quite a bit of additional context, and I think some people took my first post the wrong way. I guess "It's not clear" was not the clearest way to say it. :-P
To the original poster - I can't speak to whether or not you personally enjoy the new Swain, but have you even actually seen his updated lore? AFAIK it's not released yet...
I'd argue that there's a difference between "complexity" and "consistency". Right now, there are many parts of the League lore that are inconsistent, or at least slightly contradictory. We Narrative folks have been listening quietly to player thoughts and feedback on the boards since I arrived at Riot a year ago, and some of the biggest pain seems to be "We don't know what the world looks like, or when stuff happens, or who knows whom" - that's a huge issue, the biggest in fact, and so it's important to address that if we want to develop the lore further and give more depth to the players who want it. Some of the lore doesn't make it clear where/when certain champions are active, and we want to maximise the potential for great storytelling with the characters that you all know and love.
If you don't want more depth and just want to play some sweet games of League, in fact we already got you covered there too - we removed the huge portions of lore from the client that were (inconsistently) included for some champions but not others, and just gave a short, simple summary of each one. If players want the deep dive, they can head to Universe for more, and we will continue to deepen and expand the lore as we move forward.
So, again, I'd say the fact that this discussion is going on at all is a good thing, and I'd urge you to be specific about what it is you don't like. But we are NOT saying, arbitrarily, that this is all just myths and folklore.
(That's just Amumu. And maybe Fiddlesticks. And possibly Braum. It's not clear... buuuuuut, we could make it clearer, if we have those discussions...) ;-)