▌●▐ Who do you think are the FAKE GRUNTERS in both the Men's and Women's game ▌●▐?

Some people put it on purposely because their opponent is doing it.Like on time I saw Venus and sharapova and venus started screaming because sharapova was doing it. In women's tennis the grunting and shrieking is more obvious than men.Sometimes grunting is used to try to intimidate the opponent but it is said that just exhaling is effective.