And I'm from '84 but I don't claim the 80s because I barely remember starting Kindergarten in '89. If you honestly feel that remembering some cartoons at the end of the 90s qualifies you, I won't deny your 90s kid membership.

Also, I hardly see this as gatekeeping. If you can't remember the decade, I think it's fair to say you're not a kid of that decade.

If they'd said ""All" 90s kids were born in the 80s," yeah, that would be gate-keepy. However, they used "mostly," which leaves room for outliers. If you remember the 90s, you can still fit the bill.

Which means like it or not, you're one of us. 🙃