I haven't played any through to the end but the references and cameos are extremely bizarre? Like docfuture's shitposts levels of bizarre except they're unironic? I want to fight Model W PewDiePie........
I find that the level design kinda just "monsters along the way" to put it in talkhaus shitposting terms, but according to people you're actually improving so that's good to hear, and I hope you keep improving!
But if I had to find one negative aspect, it's that secret exits are just added for the sake of being there? Have them unlock new levels or have them skip difficulty spikes as a reward for exploring or taking risks.