Wit

• Roland: Few things are as dangerous and nasty as selfishness in the guise of ‘for the sake of someone else’…
• Angela: I think I know what you mean. The determination to work for the good of others can be a dreadful and loathsome weapon. They’re blinded by self-righteousness, and have no regards for their surroundings. They don’t care what happens to others. They justify themselves for pressing forward pursuing their justice, crushing everything in their way…

From Library of Ruina. The song “And Then Is Heard No More” from the OST touches on similar themes, go look up the lyrics if you’re intrigued

I agree with you on Demon Slayer having a lot of these moments, but Mugen Train specifically is the worst example you could give. They’re meant to be hints that it’s happening inside Rengoku’s dream.

Check out stuff by studio orange, they make insanely good 3D animation. I can vouch for Land of the Lustrous personally, but heard good things about Trigun Stampede and Beastars as well.

Kill La Kill

Idk, I feel like Mako’s monologues are exactly the type of thing OP was complaining about

“The website is temporarily down.” ironic lol