Like the person in the story who blocked the aisle for no reason? The FA wouldn't ask someone if they could let others by if there was no way for someone to do that. The guy who got kicked off was being inconsiderate to everyone else trying to board the plane.

I don't get the sense of entitlement that passengers have on planes today. You do need to follow the directions of the staff. It's not like they're asking you to do anything unusual.

"Can you move out of the way while you're doing what you're doing so others can get by?"

"Yes as soon as I'm done doing what I'm doing and you've all waited (aka nope)"