It's not "real" Mexican food, but that's ok. It's not like Panda Express or ANY other chain "Chinese" fast food place is real Chinese, but it's still good.
Hardshell tacos and tortilla chips weren't even invented in Mexico, they were invented in the United States, just like a lot of the items you'll find in a fast food Chinese place were invented or modified in the US to appeal to American tastes.
Real mexican food is probably one of the best types of food out there, but sometimes you just want to fill your tummy with incredibly processed and "I don't want to know what's inside" food. And there's nothing wrong with that.