The Frenchman had to be held back from confronting Bellamy at the final whistle of Saturday's Premier League meeting at St Andrews.
Kapo felt Bellamy had gone down too easily to secure the penalty which allowed Mark Noble to win the game for West Ham.
The Hammers' new signing dismissed Kapo's disgruntlement and concedes he is used to being a target for criticism.
"The stick you get is part and parcel of the game," said Bellamy in The Sun.
"If I'd let it get to me I'd have been out of this game years ago. I'd have been washed up.
"What happened with Kapo is just part of the game. I'm not going to blame anyone.
"They're showing passion, the same as I am. There's nothing wrong in that. In fact, it gives me more respect for them.
"As for the penalty, I don't even need to get into that. The decision was made correctly. Look at the replays and you'll see for yourself.
"The linesman was right there. If he had been on the other side it might not have been so clear-cut, but he had a perfect view."