I think you are right that some people are intolerant of social conservatives, Bob, but I think there might be another angle to that which involves the difference between beliefs and policies. To liberals, the policies social conservatives support have the effect of being intolerant towards nontraditional life choices of all kinds. Certainly we are all entitled to our own beliefs and should be respected when we express them, but policies go well beyond personal beliefs, since they affect many. The same can be said for liberal policies, of course, but liberal policies are usually criticized for being harmful because they are ineffective, wasteful, and expensive--not because they are exclusive and judgmental.
I'm guilty of what you say--being less tolerant of people with strongly social conservative views. That is a failing, but it is too easy to ignore the difference between the personally held beliefs and the policies they support.
And I'm not sure that made a lick of sense. But neither do shootouts in college hockey.