how detrimental is a rare misused punctuation? I tend to put a period in place of a question mark in my dialogues. I'm not an idiot I know the difference, lol. Maybe it's because I'm in the habit of using periods since we don't use question marks anywhere else. I don't know.
Now, don't get me wrong I find 99% of them, but for a submitted script how much would this affect you negatively if your format, structure, plot, character, and dialogue are on point? All of which I get great feedback from peer review cover.