I feel like I am going insane. My past few no toilet gun runs have had 5-8 different random QTEs each. Is there something that triggers them beside rng (like running into walls or using items or something)? I have also had multiple QTEs trigger on top of each other for added insult to injury

There are also some QTEs that I get nearly every single run in the exact same place (the doorway leading to the clay rocks is almost always a hold key event). Has anyone else noticed that?

I still have no idea how you avoided the owl jumpscare

Yes, the end toilet does not require all three of the specific toilet items in order to finish, it just needs three toilet items. And, for whatever reason, if you interact with the end toilet from a platform or two away, it will assemble the toilet and also return the water tank to your inventory. Rinse and repeat for sweet piss relief. No timing or anything tricky, just pointing and clicking.