According to The Complete Rate-Limiting Guide, you can only

edit at most 5 of one's own posts per day, more for high-rep users (scales with reputation), does not apply to ♦ mods (multiple edits of same post are fine)

Yet this user managed to delete the contents of all 9 of their questions within a 1-hour period today (annotated screenshot for future reference in case that page changes). Their reputation page suggests that they had 19 reputation at the start of the day, which doesn't seem like it should be enough to scale from 5 posts a day to 9.