No. Saying people are allowed to criticise or slag off Hilton online doesn’t mean “I want him out.” It doesn’t mean I agree with the slagging off either. I am just saying that critical and negative comments are a part of a free society, so long as it’s not racist, sexist, homophobic or personal abuse. I don’t think that is what has happened online.
Oh, and slagging him off online is different to doing so in the car. Hilton can happily ignore the former; no-one is compelling him to read such stuff.