I think this is less, "tik tok made this close" and more, "this guy was clearly moving away from this part of his business and this excelerated the inevitable."

There's another westword article from September where its made a little more clear the owner was focused on other things. When it became more popular it probably made him realize where he wanted to prioritize his time.

Plenty of restaurants have exploded because of social media and most of them have not closed down because of it.