If a game is freemium it's definitely not a AAA title imo.
League of Legends is a massive success but AAA? Not really. It's basically a Warcraft 3 mod.
And Pubg actually was a mod wasn't it?
I'm not questioning the success.
AAA implies a certain type of quality to me, and being a freemium content mill online service game is absolutely not it.
So for example, I would say that Fortnite and Genshin were AAA games from the start, and that LOL and Pubg became and have been AAA titles for years now.