"They are maniacal about deleting things that I consider noteworthy but others don't" is exactly the point of the notability policy in the first place.
Otherwise Wikipedia would almost instantly fill up with crap.
Because, in 2026, hard drives are really small and can't hold much information, that we need to limit the world's freely and globally available editable encyclopedia, too what a select group of individuals consider noteworthy. No possible editorial bias there!
Hard drives can hold lots of data these days, and text compresses rather well.
It is filled with crap for example London Bus routes
I see what you mean, but I've written a fair number of wikipedia articles at the behest of professors who are experts in their fields and were annoyed that X person wasn't mentioned. The articles were eventually deleted.
The professors should probably be the ones who decide what is notable in my view. That a small group of wikipedia editors did not appreciate the significance of the persons isn't surpising, they can't be experts about everything.