I of course make grammar mistakes and typos when messaging/commenting from my phone, but I can’t imagine creating and posting something with a mistake like this.
10-15 years ago this would have been something to ridicule and downvote, and now most people don’t even seem to care anymore.
we normalized typos as a society. And, tbh, if not for the comments, I wouldn't have noticed.
I read the comic, I understood it, I didn't see the typo. So, no harm done, and, therefore, no reason to complain?