sizzling hot take

The only thing double jump does is stretch platforms away from each other. It’s the exact same mechanic as a normal jump but now it’s longer.

I do think clamber has its place (the mechanic where if you land on the edge of a platform your character automatically climbs up it). But double jump wouldn’t exist if the developers just designed their levels more effectively.

What if you only have one jump at the start and unlock the ability to double jump later at the game

If you mean like a metroidvania where you need it to access a new area, sure. But there are many other mechanics I could think of that would accomplish that same goal that aren’t just jump a second time.

Agreed.

This is why I like dead cells because as a metroidvania platformer its "double jump" is just "stay in the air slightly longer"

Reminds me that in the English release of Dirge of Cerberus they added a double jump that bypassed almost every puzzle in the game

YES