Personally, I'd rather not have a company I work for police my social media and political activities just so that they fit with what the company desires. That would make me quit as I value a separation between my personal and work activities.

That said, the fact that the person involved is the founder of this company (not a regular employee) does change things though. I don't know anything about the politics involved, but (with the exception of recent American executives) I would imagine you would want the people who run your company to be more neutral as to prevent controversy (or at least do so quietly).