As to the photos, neither you nor I know what number 44 is shaping.
He has
a solid hold on his stock and that mitigates more potential problems
than
anything you're going to do with a push stick. If he's just doing
edge work
on that shaper his hands are perfectly safe where they are. What are
you
seeing that is such a concern?

The young lady, likewise has a good hold on her stock and her hands
are well
clear of the cutter. She has control. What are you seeing wrong
with her
picture?

The problem isn't when the person has control of their stock, it's what
happens to their body if they lose control of their stock. Kickback
has happened to all of us at one time or another, and the girl trying
to control that short piece is asking for an accident.

A push block like ones used in a jointer would make that operation much
more safe, IMO.