Have you ever considered that making fun of people isn't cool no matter who the target is? What purpose does it serve other than to belittle other people ? How can you even be sure they are trying to assert their intellectual superiority ? This is an obvious case, but many people will have different perceptions of the way others write. Something may come off as arrogant to you and yet to the person writing it they were not attempting to "assert " their intelligence.

Moreover, you might not make fun of people "until they are trying to assert their intelligence " , but I have seen and personally experienced people literally pointing out grammatical errors and using them to make fun of the other person's intelligence instead of addressing the content of their posts. It's an ad hominem fallacy and it's relatively common. The reality is you don't need to go after the grammar in this post in order to be able to comment on what is wrong with this profile. There is a lot of content in this profile to ridicule there is literally no need to go after her grammar.