As a German myself, that list is surprising. The only one I could imagine is 4., because the bins generally aren't watertight, so you're essentially spilling water on the floor which will make a mess for everyone. And there are always places to pour the water it's just usually at the entrance of the terminal ... Which is obviously dumb, cuz nobody is going to go back to them after they've already queued to get in.

But 1-3? You must've really gotten unlucky...

1 I could only imagine in expensive restaurants,

2. I am seriously surprised by, because while the person manning the train would almost always ignore you, so would everyone else - no matter what kind of gesture you do.

And 3... While I cannot fathom doing that on purpose myself, I'm extremely surprised anyone would bother interacting with anyone about that? Definitely doesn't reflect my experience living here for roughly 40 yrs