as an old gen here's how I can tell when someone is a new gen
They don't know what a heta game is or only know about dreamtalia and hetaoni
They say Larp instead of "cringe" or "roleplay"
When seeing a italy coaplayer or italy meme, their first thought is ep 23.5 not hetaoni (back in my day people asked me to hold the journal to show hetaoni, now I'm asked about episode 23.5)
They don't know what lemon is
They don't know that usuk was the most popular ship in Japan at some point
They would not have read the webcomics
They get mad at heta facts
They think hre equal Germany
They think Romano equals the resistance
They'll mischaractetise often
They won't know about the usuk fruk ship wars
They won't know how emotional dreamtalia and hetaoni was at the time
They won't know who kyokoon is
They won't know about the ep 23.5 sequel
They won't know about the hetalia ask panels
They say kinship or fictionkin instead of kin
They have a certain art style
They get very emotionally mad over small fandom discourse
They obsess over England having schizophrenia hc
They make gacha hetalia react videos
they'll say feliciano and romano instead of veneziano and romano
they'll draw the italy bros curl on wrong side (not on purpose(
They won't know what ride that Pony is
I've noticed They aren't as obsessed with prussia as old gen was. I remember prussia fans used to be everywhere
I have barely seen prucan mentioned anywhere by new gens
Niche ships like canmano and ameita, gerpan are more popular now
They won't understand 2ps
New gen focuses on Romano a lot more pretty sure back then there was more focus on Canada
Back then the ship wars were around England, now the ship wars are about who tops/bottoms
Barely any hetalia mmds. Where are the hetalia mmd compilations
They don't know how popular pub to go was
They don't know the seiyuu event
They don't know the time the romano va said don't touch me to venezianos va
They don't know the clip of veneziano va singing let it go
Saying terms like the rizzler and aura
Have not seen anyone new refer to Luciano and italy ship as felicest
Being kind of oblivious when mentioning hetalia for instance when I talk about it, I say "sorry it's kind of a offensive show" when my friend at work spoke about it , they said "yeah I remember it back then, I was nervous to bring it up because of the rep" while new gen fans generally will be less nervous to mention it.
comparing it to country humans or They used to be in the country human fandom
Wont know what polandball is
Some old gen are gonna relate to parts in the list or new gen fans won't fit each box and that's fine I'm just noticing more what the new gens I've seen do. I've only been a fan of hetalia since 2015 so I might not even be considered an old fan I don't know
Any of the shipping wars because it was more than just usuk vs Fruk, it was also
yaoi vs yuri,
AusHun vs PruHun (which sometimes ended up as PruAusHun)
and much more