It depends on the student and the instructor.
Me, I don't want happy talk and encouragement that was not earned.
"Push" at the lower levels means pretty much what Smiley described: failing to finish the stroke. Just dinking it back. Believe me, it works fine at 2.5 and low 3.0.
I'd guess the pushing is what annoyed the pro.
Cindy -- who rarely gets positive evaluations from her pro that don't have the words "for your level" attached to the end of them, and who doesn't mind the qualification because it's true
-- Random Error Generator, Version 4.0
-- Master Moonballer