Interesting question! I would love to see that documentary, if you have any link send it I will gladly watch.
I am not a fan of this kind of marriages because they exclude free will. I would rather modify the concept and have arranged meetings with people considered suitable and let partners decide. Are the odds better when family picks? Not necessarily because of our own love maps. My mother knows me as her child, but me as a woman as a romantic partner might be a completely different version from what my mom imagined for me.

I consider attraction important but not vital. There is a saying: if the sex is good, it makes 20% of the relationship; if it's bad , then it is 80% part of the problem. If we completely exclude attraction then we have platonic relationship, which may be fine for some folks.
Principles and values hold the foundation steady and strong. And if partners consciously picked each other with all then it is the best. The argument that I have against arranged marriages is the right of free choice, which is robbed from people who engage in such practices.
What I find good in arranged marriages is the prioritization of common values. But I think that two people who pick each other and are attracted from all perspective would make a more happy marriages.

I would love though to see some statistics about aranged marriages and the level of happines inside them in comparison with modern marriages. It would be interesting

What do you think about marriage?