Well, what I'm trying to say is the Byakugan is an alien eye that was passed down to humans, while the Sharingan is an eye that was manifested in humans themselves. I think that would play a big difference in how humans can wield the eyes.
I know every top tier Uchiha beats every top tier Hyuga, but most Uchiha wield power that has no correlation with the Sharingan. I'm talking about the eyes themselves, their abilities, not the people wielding them.
Danzo had Hashirama DNA, Kakashi... don't know enough about him to comment.
Haven't seen much of the Hyuga clan as a whole, but considering they're called Konoha's strongest clan and their taijutsu prowess, I doubt a bunch of clones that got taken out by a 12 year old punching the ground are superior to them. They're definitely not Hiashi, Neji, Hizashi, or Hinata.
What about it?
You don't see how hypocritical it is to say that the Hyuga are at a disadvantage with their eyes from a god, than the Uchiha with their 3x watered down eyes from the same god?
There's literally no evidence in the entirety of the manga that the Byakugan has any drawbacks from being Kaguya's original eyes. Literally none. At all. So that's entirely fanfiction.
And even if they were more difficult to adapt to, who cares? That just means they're worse than the Sharingan, which proves your opposition correct anyway.
Lastly, you really think upgrades have anything to do with Uchiha shitstomping Hyuuga?
EMS Madara, MS Itachi, MS Shisui, EMS Sasuke, MS Izuna. Literally all Uchiha with no exterior upgrades to their abilities, all able to take out any of the most elite Hyuuga with stupid ease using their eyes alone.
You really just have to accept that the Byakugan is the shittiest of the Doujutsu, and the Hyuuga were forgotten. It's a manga fact. Get out of the past. The Hyuuga are called Konoha's strongest clan because the Senju and Uchiha are gone. They're one of the
only clans left, and even then I can think of a few other clans that give them a run for their money as well.