I don't think wearing barefoot shoes is the be all end all solution. Did some searching for research papers, and all the papers I found say the same thing: nothing concrete has been discovered yet. But a few papers did mention that to utilize a pair of barefoot shoes, one must change their walking/running form to always land on their ball of the feet, as there is close to no cushioning on barefoot shoes. This becomes almost impossible for sports where one need to do stand wide and shifting weight continuously from one leg to the other, since human feet aren't built that way, i.e. each step needs to be small enough if one want to land on the ball of their feet. Just stand up and test out yourself to see how much wider each step you can take when landing on your heels compared to landing on the balls of your feet.
Anyways, table tennis shoes are one of the most lightweight sports shoes out there, so I'm going to stick with them for now as I don't think I'm able to keep a proper form while trying to always land on the balls of my feet while moving around while playing. Maybe I'll consider a pair of barefoot shoes for walking just to see how it feels.