You may well be right.
I try to take people at face value unless proven otherwise. However, with the inherent anonymity of many internet forums, including but certainly not limited to Free Republic, lots of mischief can and does happen.
I can respect a sincere Gingrich supporter who has bought into Gingrich's political philosophy, including his advocacy of the need for an informed electorate and a classic Judeo-Christian view of civilization. I respect his legitimate accomplishments in the House of Representatives, doing what most people considered to be impossible by becoming Speaker. If it weren't for the issues in his personal life, I could easily see myself having been a Gingrich supporter. Even with that past, I have repeatedly (though largely unsuccessfully) tried to make a case to fellow evangelicals who know me personally that Gingrich is a legitimate choice.
Still, the repeated Christian-bashing I've seen here has had an effect.
I know what the Republican Party was like in the 1970s and early 1980s, and I know from personal experience how I was treated by fellow Republicans when I was converted in the mid-1980s.
I have not seen this level of anti-Christian sentiment among conservatives since those days. I thought those days were over, and I thought Christian conservatives had long ago secured a place as a legitimate part of the Republican Party, right along with the (distinct but overlapping) economic conservatives and military/national defense conservatives.
What I see from a significant minority of people here scares me. We don't need to go back to the bad old days of Christian bashing in the Republican Party. The Democrats will do that quite aggressively on their own without help from Republicans.