So if lore is not explicitly stated, it is bad, becapse of guess work, unless it’s in TES, because then it sparks “fan theories”

I never said DS lore was "bad", I just said it wasn't really that deep, because most of it was based on guess work from fans and YouTubers who need a reason to keep making videos. I like DS, and I've played the whole trilogy, including DLCs, but a lot of the "lore" is actually fan fiction. Then I said that in comparison, TES is much deeper - or more "expansive"/"developed", if you prefer those terms - while also offering room for fans theories. That's all.

Basically, learning DS lore is like assembling a jigsaw puzzle that is missing most of the pieces, whereas learning ES is like reading history books, which can never give you all the answers.

Some people will like one or the other more, for different reasons; but I'd say TES lore is definitely deeper, since it has a lot more to dig into.