Why do you think timewasting and feigning injury is ok, no one else does. KVV got needlessly involved and got booked.
You can see it around 2:22 in this clip. He challenges the keeper, slowing the process down, giving the keeper an excuse to go down. Without his intervention the keeper would have kicked the ball up the park while our guys were celebrating.
The keeper was at it and ironically we took advantage of the time wasted. But when a goal is scored it should be left to the defending team to restart the match.