Poor comparison. The defender wasn't protecting the ball, he was trying to win it back. He wasn't shielding it and using his body in that way, he essentially tripped the opposing player.
Disagree, the Canadian player would have struck the ball with the foot that the South African player impeded, essentially trapping his leg from being able to kick the ball.
Absolutely.
They've commented that our defence isn't a strength and that our attack is, but even then - compare the likes of Madueke, Eze, Gordon to the talents of France, Germany Spain and you see that we are pretty light in depth of quality.