Me. Liveaboard, CC, under 30. I've been doing ~1500 lock-miles per year on my own boat and a variety of others.
Also DShk, agg221, Jonny P, Ewan123, ...
Often (as with the fendering here in fact) I generally agree with your underlying point, but the attitude that comes with it is offputting.
Your list of reasons would have been a perfectly good argument if you hadn't tacked the pedalo bit on the end.
Another awkward mooring is Worcester racecourse/promenade - rough concrete protruding above gunwale height, depending on river level.