It actually is possible to make it past that section without any attacks, but I made it way too difficult to do so. The idea was that it would incentivize players to keep the ground pound. I don't blame you for thinking it was impossible. Definitely should've raised the ceiling up.
Good points on the deceleration and wall jump height as well.
Also, don't worry about sounding too negative. It's critiques like this that make games better!