I agree with a lot of what you said, but I'm not sure about the "looked down upon" part. My impression is that the sentiment is more typically one of concern a

I agree with a lot of what you said, but I'm not sure about the "looked down upon" part. My impression is that the sentiment is more typically one of concern and/or alarm. It's a concern that these "cultural" Christians are deceiving themselves about following Jesus, and are therefore at significant risk of not having eternal life. I think what many of these evangelicals find particularly vexing is that they don't know how to reach out to these "cultural" Christians without so offending them as to make them permanently unreceptive to the discussion. I've wondered sometimes if a big reason adherents of a particular religion feel threatened by encountering those of other religions, is that forces them to confront their own doubts about their own religion's veracity. If one's sense of eternal wellbeing is hinged on having chosen correctly, I would imagine that's a terrifying thought.