The kicker isn't always respected at the Stoop, but that's because of the general hum of conversation, not people deliberately trying to put him off.
There are occasions the boos carry on to the kick because of what's perceived as a wrong decision by the ref, but they are limited to less than once per game I'd have said.
The booing came across quite clearly on the TV and I was wondering if there was something I missed that started it.