You know what works really really well for that big clog of slimy hair that catches on the stopper?
A long thin bottle brush.
I am not sure why we have one - I think it was for cleaning out fish tank filter tubes - but I unscrew the stopper, insert the bottle brush, scrub up and down a couple of times and pull out some seriously gross globs.
I found an earring once.
Then a good long flush of hot water.--
Expecting the world to treat you fairly because you are good is like expecting the bull not to charge because you are a vegetarian.