Who Hates When People Type Like This? (wanting opinions)

Ok the title might be influential but my cousin types in comments on youtube and that starting every word with a capital letter. I said to her how people (like me) find that annoying. Then she saw I have a sig and tried to compare them saying that if starting every word with a capital letter is annoying so should having a sig on forums be equally annoying. anyone have any opinions agreeing or disagreeing with this?