Guess this is like the hot stove syndrome. You touch the stove it's hot. Even though you were told it was hot.

Have read here many times that the seats assignments are taken away when there is a minor schedule change. Had not happen to me so did not worry. Than it did happen to me.

Now I check my booked reservations often so as not to get burned again.

Will they make the stove so it will not burn. Who knows. But I'm not going to get burned again now that I'm aware its a possibility. YMMV