Dehumanising is like the below link[1] where someone compared migrants to cockroaches[1]. Calling someone's software development skills "bottom of the barrel" is not dehumanising unless you think that only Silicon Valley software developers are real valid humans and everyone else subhuman.
[I'm not defending the bottom-of-the-barrel Indian devs comment, that did sound racist to me].
I guess that's a literal interpretation but the OP's comparison serves the same purpose. It's sad that he has an edit option where he can clarify/correct to phrase it differently if he chooses to but continues to have it stay the same.
