The issue people have with bnt is the fact that on paper it can be used to do things that are otherwise impossible in xspar, but in practice it's just used to do the things you could do in xspar but much easier (and it can also look really fake sometimes lol). Not many people are legit using bnt like the creative tool that it could be (i'm not saying no one is btw)

Tricking is fun and cool, I like making tricking replays even though I'm a bit shit (I'm a ukebasher) but following the widely accepted rules of tricking helped me to understand the perspective of tricking replaymakers and the workflow of making a tricking replay directly improved my ability to optimize my decisions in ukebash to the point where I can make full replays without editing now if I take it slow

I think what makes a good tricking replay is trying to move away from doing things you've grown really comfortable to doing. You don't need to be avant-garde or unrealistic to be creative and have interesting tricking replays. Being super clean at doing flips and corks is cool and all but those are only fundamentals being able to deviate from typical things while making it still adhere to commonly understood tricking rules is the "endgame" so to speak, in my opinion. Like at the point where you look like you're gigatrolling but it still looks good. Limiting yourself is not a restriction born from "realism" it's a restriction born from a lack of creative ability seeing it otherwise is just cope imo

bnt is valid, it's just seen as crutchy the way it's currently being utilized