Matt wrote:
Their policy is to make the fat passenger buy the extra seat whether it is
full or not. If flight turns out not to be full then they get a refund.

Which is why the pax did have a valid argument: if they didn't complain about
her size for the outbound journey, how come they complained about it for the
inbound ?

If one is definitely oversized, they should be trated as such 100% of the time.

Airlines need to have a butt metre, something similar to hand luggage sizer.
This way, judgement is purely logical and involves no judgement from staff.

Once they've dealt with fat passengers, they will then have to deal with
smelly passengers. In the end, passengers will have to pass through some form
or arch that will not only measure their size, but detect too high
concentration of odours and especially alchool. And they'll need a camera
below the crotch to ensure that any pax wearing a skirt is wearing underwear
(with some artificial intelligence software to ring the alarm, since having a
human monitor that camera would be considerred pervert).

What other problems did "Airline" point out ?