Your analogy instantly brought me up to speed, and spells out just how bad it would be.
Thanks very much!
C'mon mate, exchange some culture!
The stereotypical Jackie is not like a Karen. Where I'm from a Jackie is a lady who's usually a little older and working class, great conversation IRL, very inappropriate, the type who says stuff in her back garden and you roll your eyes and close the windows so your kids don't start repeating it.
The cultural collision is that Jackie is not as much fun on Nextdoor, because something about the anonimity and having to write out the things she says out makes them sort of horrible, and she very easily slips into being a bit of a bully.
For what it's worth I think the UK equivalent of a Karen is Sandra, whose husband is Terry -- whereas Jackie is obvs with Barry.
When you really examine them, stereotypes are weird.