Normally when I see a game that catches my attention I'm like that, I give feedback to motivate them to create a better version of what they made. The same goes for me, I improve the parts where the feedback was more than sufficient and viable for my development experience.
Viewing post in Devs removing games after commenting
They could have done that, deleted my comments, but deleting the game just because of the comments is a bit much.
And regarding deleting games to re-upload them to gain more visibility, the same thing happens on YouTube, they delete and re-upload videos desperately to gain visibility, but they achieve the opposite, because according to YouTube and its algorithms it is not practically recommended except if it is for the purpose of editing them.