[colorado tanker]

Years ago, when our oldest was a two year old, we were on a flight that was delayed. They pushed away from the gate to claim an "on time" departure and then sat for a couple of hours on the taxiway. Our daughter wanted to sit on Mom's lap. Why not, we weren't moving and not about to move? The nazi stewardess insisted she sit in her seat with the seatbelt fastened, treating the passengers to two hours of a two year old crying tantrum.

Some people are just not born with any common sense. Or maybe they enjoy torturing young children.

[Valpal1]

It’s not common sense they lack, it’s humanity. Stewardesses/Karens who enforce rules in a petty manner are actually sadistic sociopaths who enjoy the misery of others.

It’s completely intentional on their part, although they play dumb, the outcome is exactly what they wanted.

[TalonDJ]

“Some people are just not born with any common sense.”

Her job is to enforce FAA rules. That is an FAA rule. It is dumb but she probably wanted to keep her job. You can’t be away from the gate on the tarmac with passengers unbuckled. Rules exist for a reason. The worst aviation disaster on record happened on the ground.