Interesting juxtaposition with the article about the Emirates quarantine.
It's impossible to know how sick someone actually is on the basis of symptoms on boarding. Someone sick enough to vomit while boarding could have a lot of things, some of them pretty bad.
Imagine if they had taken this person and they had gone critically bad during a long haul flight - or spread an illness to passengers around them who went on to suffer bad outcomes. What would the press or courts have made of that?
No winning here. I am clearly biased, but the whole thing looks a bit opportunistic to me.