I noticed following user profile , he has joined today has not got any upvote for question nor has answered any question, how did his reputation surge so high within such a short period of time?

First of all, greetings to all of you. Excuse me for using DeepL translator to write. I often use it both here and on TeX.SE, my first privileged site. Recently it has happened to me that some of my still active questions have been considered as if they were exercises to do at home. Personally an...