Neville, you’re overgeneralizing. From my admittedly limited knowledge, there’s a wide range of practices in Conservative synagogues. I mentioned one that used the Artscroll siddur. I know of another that used the Birnbaum siddur. It’s highly unlikely that they censored prayers (though I suspect they skipped a lot). I use the past tense because these synagogues both closed a few years ago.
My guess is that there are no Conservative synagogues with mechitzas but there are still some that don’t count women for a minyan or give women aliyos.