Alright, I finally beat it after dying 51 times! My verdict: very unsafe. :)
A few notes - I noticed immediately that things like coyote time and jump height control weren't included. This probably contributed to a huge portion of my deaths, as I was too used to it from other platformers and would walk off ledges constantly.
Also, I'm not sure if the wheel results are scripted or what, but I got ghosts on the first spin, and in my opinion, this was the most annoying hazard by far. On top of being able to actively chase you and pressure you to move, the ghosts also sometimes spawned slightly hidden from view. Since they can travel through platforms and are invisible while doing so, it's easy to be standing on a platform and get ambushed out of nowhere. I did eventually learn how to deal with them, but it was more so through trial and error and memorizing where all the ghosts were in the level.