Nothing more annoying than a politically involved celebrity.
I guess religious leaders are less annoying right?
We actually need liberal celebrities as a counterweight to all of the very conservative religious leaders who have a deep cultural and political influence on people's everyday life and choices, especially in the US where Pew research shows that a majority of adults are actually fearing religion becoming less important in US society
and politics (56% of respondents, including loads of Democrats, think politicians should care
more about religion). Like US politics weren't already way too in bed with religion as it was... As we all know, it's still a sin to be an atheist in the US, especially so if you're a politician, despite Bill Maher's* continously rising popularity.
*Perhaps the most famous atheist in the US.