I would never pull someone down to sit down to my eye level if in a wheelchair, never.
I would never pull someone closer to me so I can read lips better.
And certainly I would never remotely pull them to something that I want, as in this case, digital remote camera.
However, it is a courtesy to ask them to adjust for your sake. And only a courtesy.
This OP dude needs a proverbial slap across the face.
Just ask, curtly and nicely.