That's a great clip.
One feature I have seen with the 'progressive left' people that I know IRL is a low opinion towards Christians, which they do not have of people from other religions. Is this due to the fact that the US has a lot of Christians?
That's an interesting observation. I'm not sure I really associate with anyone who is "progressive left" except in passing but it's something I'll look out for. Most of my family and friends are centrist left and, like me, share many (but not all) of the values of the Christian faith - even though the majority, like me, are atheist.
I find the Christian's proof of Christianity (eye witnesses at the resurrection and lots of info in the bible) in this video as compelling as a person who tries to convince me that we all have a gender identity (and that I just don't feel mine as intensely because it aligns with my body). I don't believe in any of it.
However, the key difference is in how each of them treats the other. The Christian is by far the more respectful. Even if the Christian were to have told the TW that he thinks identifying as transgender is morally wrong because of his faith, he'd still be showing more respect than he's been given here.
On that point, I would likely "side" with the TW in that it's not morally wrong to identify as (dress as etc etc) someone of the opposite sex. It's only morally wrong to insist that everyone else has to accept it as truth (e.g. in women's sports), force people to use preferred pronouns upon pain of losing their job etc and coerce children and young people towards an irreversible medicalised pathway, which has no viable evidence base, as the answer to alleviate any distress that they might be feeling about their bodies. I suspect the Christian and I would agree on these latter points and, judging from his approach in this video, that we would both agree to accept that we would never find common ground on whether transgender identity itself is immoral.
I suspect any rational person watching this would come to a similar conclusion.
Operation let them speak.
Edited to add: I have friends who are Muslim with whom I've had some fantastic conversations about shared values. Two are male colleagues (one ex, one current) and we've had some brilliant conversations about all of it, including on the role of women. We have many areas where our values are shared.