I'm fine with people who don't know about SNSD, I don't think I had a problem with that.
It's not like I know all about SES and their achievements back in the days either.
But I do respect the older gen and I would never put myself in a position where I downplay their past achievements and say how insignificant it has become compared to the new gen.
The newer gen are supposed to do better than the old gen. That is how you know Kpop is still going strong in the music industry and is still growing.