I cannot see who made that comment. Pretty sure it is not the dev who is getting crucified. I am not sure it is even anybody that contributed to SerenityOS or Ladybird.
I certainly do not see anybody from the project endorsing that language.
I mean, I read the comment on Lemmy. Should I now go around saying not to use Lemmy and using that quote as evidence for why?
It is not difficult. Not everybody agrees that it a desirable thing to do.