Discussion on question by Владимир Мудров: Поставил тире, грубая ли это ошибка?

Imported from a comment discussion on https://rus.stackexchange.com/questions/482599/%d0%9f%d0%be%d1%81%d1%82%d0%b0%d0%b2%d0%b8%d0%bb-%d1%82%d0%b8%d1%80%d0%b5-%d0%b3%d1%80%d1%83%d0%b1%d0%b0%d1%8f-%d0%bb%d0%b8-%d1%8d%d1%82%d0%be-%d0%be%d1%88%d0%b8%d0%b1%d0%ba%d0%b0