People have always sorted by first impression in contexts where that's all they have to go by. That's been a thing in e.g. night clubs etc. long before Tinder.

But for my part at least I've seen no indication that people treat people in real life like it's Tinder once they get to know you first. I'm not even sure what treating people in real life like it's Tinder would look like unless you're basically putting yourself forward before having had any meaningful interactions with them first.