I’m pretty sure Gen Y covers everyone born from the 1980’s to 2000.
That’s pretty generous. The differences between someone born in 1980 and 2000 are vast. I’d say someone born in 2000 has a lot more in common with someone born in 2005 than 1995.
There has to be a cutoff point somewhere, and 2000 doesn’t sound too wrong. I mean, one of my brothers was born in '95, and we aren’t really in different generations.