There's a un official leaderboard on the discord if anyone is interested.

They explaned why it was removed, I dont think they did this to "hurt" speedrunning, If not they would've patched everything.

I like Terbium Definition.

Expanding on that, Water Bomb Jump is also a Glitch.

There's a flag that prevents water bomb jumps outside of floor level. That flag is circunvented at storing the special setup the WBJ needs. thus making it a glitch.

TLDR: WBJ was not intended but discovered, hence it is a glitch.

It is an interesting category to go Glitchless.

I've done All Bosses and you can shove a lot of time with Pseudo Wave- Early Cloak and Water bomb - Early Ice. So that category is also benefit by glitches.

It should be discussed by the community.