He does, I don't get the criticism because he doesn't have some grand plan for the greater good or whatever.
If anything, it's almost refreshing as concept in how classical as a villain he is, in line with the whole game.
I posted my personal POV in the other thread:
The experiments and conditions of servitude broke him, dehumanized him and denied his own identity to the point that he accepted the title of "Sovereign", a surname and the persona of a Lord and slaver as desperate cope.
That's why his desire is "a beautiful and precious life".
He stalks Alphen after he loses part of the mask and destroys the world because Alphen, despite all he went through, despite temporarily losing his name, memories and identity (to the point that at first he is literally a faceless protagonist), has never given up, they were never able to deny him those things. This is why Vholran used to be a no name and nobody knows where he came from, not even his slavers, and instead Alphen recalls moments of life before going to Lenegis as he loses the mask.