Glad to see you got it playable before the voting period ended!
I understand the inertia mechanic but I think the implementation is a bit flawed. Using it leads to a lot of scenarios where you kind of have very little control of yourself which is pretty inconvenient in a level with very little safe zone. Most of the time I would try using it, I'd either miss the timing a bit or flung myself way further than I wanted and I didn't find the dash a good enough tool to correct my jumps.
It doesn't help that basically every jump but the last one can be done with just jumping + dashing even if some are precise (and I'm not convinced that last one is truly impossible). It's a lot more consistent and just overall easier. This led me to play the game as if the inertia mechanic was a hazard and not my main tool for movement which I don't think was the intent?
I think there's potential to it but it needs to receive more iterations to make sure the player has a bit more control over their jumps.