I don't find the implementations to be annoying.
I do find the interpretations to be annoying though.
Unlike the right mouse button, they're using the same button to mean two different things. The problem is that the sensitivity is not adjustable, and Force Touches are sometimes received as a standard touch, and a standard touch is misinterpreted by the WATCH as a Force Touch.
This happens most when I'm in the Music glance or app, and I'm trying to switch tracks. Especially on a moving train, even if I miss the button ever-so-slightly to skip to the next track, or not, I start to see the interface shrink to go into the context menu.