Is the spell check on this app THAT bad or...

I know you guys know what I'm talking about lol. Some posts I read and find myself saying "wait... Did the spell check mess up or is this person seriously spelling like this??" I mean I know I've seen a few of my own posts come out weird so maybe not everyone is a chronically bad speller lol. But then again, you can sort of tell by the content that some of the posters are very very young and ummm... (Nice word for dumb???) grammar challenged?? Jk jk