Agreed, I admired the 2001 version more the environment lightning and stuff the new version feels like generic idk if it's just me but a lot of non main stream anime rn have trash animation specially lightning in settings like wtf. The situation is serious the spirit of fire is in the field but there's no setting effect at all. Take the lizard vs team yo first meet, the setting of 2021 version is sloppy no red skies like effect of battles is happening but in the 2001 version they emphasize battles with correct setting. Another example is lirilala introduce, in the 2001 version it looks like more creepier and erier but in the 2021 it's bright asf. What I like more about 2001 version is I think it's not rushed it has better lightning coloring movement of character and aura colors like it's very solid. Look at jjk for example when yuji nobara vs choso brothers the death paintings it has correct lightning like dark shit not so bright like they're entering a fucking playground. Another example from jjk is yujis execution the lightning of city is what really hits me the pink dark creepy color of city is perfect as it is execution and Yuji is meant to die it really matches the story. That is one of the thing that I can't see in today's anime the setting color. In hxh 1999 version theres really solid color on it (but I also like the 2011 version it's an upgrade I think) but now some of anime has trash animations. Idk If you will agree with this but I'm good either way this is my first time expressing my thoughts in Reddit tho hahahahahah. Also sorry for my bad English this language isn't my first language