That is: he stopped when he saw the mess he created?

But honestly, he could have done all that in error. My impression is that he tried to add shops. Some of them twice - likely because they were not visible yet on the map. And then came the update of Maps.me, and he saw …

Is the User Interface of Maps.me available in Thai?
Are there some people in our community writing Thai well - and also know how to communicate in Thai style, not Western style literally translated into Thai? (I can’t do that.)
It’s actually a shame for us that we cannot make such people useful members of the mapping community.