It doesn't sound like they just left him there:

Upon landing, crew members on the British Airways flight said the Vancouver airport did not have an eagle lift — a piece of equipment used to help passengers in wheelchairs safely exit aircraft. After two hours of confusion and several failed attempts to get Schneiderman off the plane, paramedics were called to assist.

They didn't have the right equipment or training to properly help him (there's your cost-cutting for you), and repeatedly tried and failed to move him before calling paramedics to get him off. And even the paramedics almost dropped him:

They slid the backboard under Schneiderman, then lifted him onto the top of two trolleys normally reserved for serving passengers food and drinks during the flight. Schneiderman's head and legs hung off either end.

Because the two trolleys were not attached to each other, they slid apart as the paramedics rolled Schneiderman down the airplane aisle. His partner, who was travelling with him, watched in horror.

It's not clear whether he was injured from sitting there or from the failed attempts to move him, possibly both.

Then they just dragged him to his wheelchair like a ragdoll:

Once out of the plane and on the connection bridge, Schneiderman was dragged to his wheelchair.

"They pulled from under my arms and just dragged me. My shoes came off my trousers actually started coming off," he said.

Just utter incompetence all around.

don’t let indifference to your job dehumanize people.

I agree with this sentiment, but that would be a whole lot easier if 99% of customers didn't spend all their time dehumanizing the workers and acting like we're fucking subhuman and only exist to serve them.

Kinda hard to thread that needle when you're busy being dehumanized yourself every fucking day.

And to be fair, that's the point, they want us all dehumanized and unable to help one another outside the corporate system.

Knowing that doesn't make it easier though when you're dealing with uneducated cro-magnon fuckhead customers who think they own you and bosses who essentially do own you.

Also, let's not discount the whole "lose your job because you did the right thing" angle. That hangs over every employees head every day, all day. You're literally disincentivized by your employers to "do the right thing" because "doing the right thing" means losing your fucking job.