i wanna maybe gather my thoughts about it in a more analytical fashion, but i feel like the point tvl is getting at is that lestat has been stuck in a child's mindset throughout his entire existence. a lot of people who read the books praised lestat's ability to endure, something that lestat said himself in s1e6 as well, but reality in the show is that he's only been enduring because he sees no alternative but to live.
watching iwtv it may seem that louis is a weaker person between them, but now i don't think so. i think louis is actually a stronger person because he constantly seeks the meaning in his life and holds onto what he finds. it's mostly the circumstances, the society and certain awful people that crush him and inhibit him. in comparison to claudia louis is indeed weak and aimless, but reality is, he still persists no matter what ("as long as you walk the earth, i'll never taste the fire"). his biggest weakness is reliance and self-definition through other people.
but looking at lestat and how he describes his own existence, it feels like he only lives because he's afraid to die. it's like in his mind there's no alternative but to live, even when there's no meaning. and sometimes the meaning finds him, but usually he just... exists. and he spends the mindless years of his existence searching for "fun", like a child kicking rocks on a street. and when the reality crushes him, and it happens very often because literally everything crushes him, he hides. sometimes for 100 years at the time.
the way he lashes out and reacts to his ego being hurt can't be described as anything other than "immature". i keep finding myself shocked at the way he talks about louis and calls him names in tvl, but then i remind myself about the chess scene from s1e6. "finish the game!!" and the litany of childish but hurtful insults towards someone who refused to play by his rules. the racist microaggressions to provoke louis in s1e1. the possessiveness. it's the same lestat. his experience before he met louis didn't make him grow up, so why am i surprised that all the experience after hasn't changed him as well?
the way he tells his story, everything happens to him. he's the center of the world, but he doesn't really make decisions, it's always someone older than him saying that he needs to do something and he does it. or sometimes doesn't do it when he feels rebellious. we joked about louis not taking accountability sometimes, but lestat "accountability" is just him saying "yeah i hurt you on purpose, what's you gonna do about it?". arguably admitting you did something bad is very easy in this mindset, where guilt evaporates (but really, hides in the farthest corner of the mind) after new fun activity takes its place. when there's always a new game to play, there's no place to think about your life. when the old toy is broken, discard it for a new one.
and the main reason for him being stuck in a child's mindset is obviously the abuse by his parents. and continuous abuse by his mother who's regrettably still alive (because he kept her alive, like a child would). he refuses to confront what she did and still does to him and it stifles his growth. and especially when she's next to him, she overshadows everything in his life and it makes him even less capable of self-reflecting. and while he's like this, he'll continue to hurt people around him horribly, especially people who relied on him and looked up to him like nicki, louis and claudia. "will my toesies ever touch the ground?" - i have the same damn question...