Too often "religious liberty" is used when what is meant is, "religious privilege".  Most of us are happy to live and let live.  The problem is when some (I'm looking at certain bishops) feel that they are entitled to impose their views in the public sphere on those who do not share them.  

Rather, they should be standing up for those of minority faiths to have the same robust rights.

A key test is whether someone is happy with Muslims, Buddhists, or pagans enjoying the same rights and opportunities.  If not, it's not religious freedom that someone is defending.