... because thinking yourself superior to people from 400 years in the past is a totally human thing and it's something a 21st century person would think of stuff from the 17th Century.
We have access to technology and other advancements, but we are in no way "superior" to our ancestors of a few centuries ago, at least I don't feel that way.
The clothes do not make the man.
Sure, if you really think about it like that. I'm just saying what an average guy on the street would think. Ask some guy on the block and he'll say "Yeah, of course we're better than those guys!".