Just calling them "Bouncers" adds to the image of beating up punters.
Reminds me of the UK in the 90s.
They need awareness course's and licensing, but that's very unlikely.
Had a slight problem myself with VietJet a jobsworth pulled me at check-in as slight damage on the next of kin page and they will have to contact my arrival immigration.
I explained that it was Thailand Immigration that caused the damage do to all the staples they stick in it.
Ended up being tracked though the Airport including a visit to the Immigration desk.
No problem on the return journey