How did Hagakure pass the UA entrance exam?
The test gave the option of either destroying or disabling the robots. I can't find the original statement, but the general consensus is that Horikoshi at some point said that there was a button to disable the robots. This would allow Hagakure and such to disable the robots by sneaking around them and pushing the button. However, Shinso's quirk only works on human beings, he had neither the combat nor stealth abilities to disable the robots.