Yeah, I mean he was crapping into a toilet, in a bathroom. Sounds 100% appropriate to me. Just because few other people would be comfortable doing so, since they (like me) have been conditioned to expect the additional privacy of a stall, does not mean that he actually committed a faux pas.
I am reminded of one time I stepped into the gents’ at a post production facility, and a fella I know was standing at one of the urinals, taking a whiz. What caught my attention was that his pants were puddled down around his ankles, and he was pissing with his ass hanging out there in the breeze. I realized that I used to see other guys do that all the time… when I was in kindergarten.
I never got around to asking him why he didn’t see fit to observe the more-general adult custom of simply opening one’s fly to point Percy at the porcelain, rather than dropping trou altogether.