Disagree, watch from 29-31 seconds, the scorer is pretty much standing on Vyner's toes, then pulls away with Vyner seeming totally oblivious to the movement, if Vyner moves to follow, then the space for that shot goes. Kalas was too far away and had his back to what was going on, yes he could have waited before attacking the ball, but the closest player failed to track the movement in front of him.
I get that Vyner is not a combative player nor is he someone that's going to win a header, but you can defend by reading and denying space, and that appears to be lacking. I certainly wouldn't consider bringing him on as a sub in an attempt to park the bus in the last few minutes of a game, that's just asking for trouble