Of course, the problem here isn't his view, which nobody actually knows. It's that he helped strip a civil right from a bunch of people, including some of those he will now be in charge of.
Context matters though. If you make these opinions at the workplace and someone feels threatened, discriminated against or harassed, there are legal repercussions.
And I assume this goes both ways. If you have an unpopular view that is expressed outside the workplace but are harassed by your coworkers, there is a risk of legal repercussions on those coworkers too.
If he is biased against gays, a concern raised by helping fund the removal of one of their civil rights, people can be reasonably afraid that this will eventually affect them in the workplace.
It need not be something obvious, either. Most decisions made by CEOs, especially decisions on who to reward and promote, are almost entirely judgment calls. Do you want to work for a guy who might not treat you fairly? "Yes" and "no" are both reasonable answers.
In the workplace, anti-discrimination and harassment laws do not make him free to express his opinions.
>> If he is biased against gays, a concern raised by helping fund the removal of one of their civil rights, people can be reasonably afraid that this will eventually affect them in the workplace.
I would think this concern would be true of any manager who has a fundamentalist interpretation of a particular religion too.