My take on this was merely that the people who consider arranged marriages icky would find the story arc revealing and interesting; other people would not get the same kick out of it. "Our culture" there would be very narrowly defined as yours (I presume, begging your pardon) and mine here and now.
(Yes, you are right, my culture here and now, and, as I said, my mother's generation's culture finds arranged marriages a ludicrous and unacceptable idea, but it was completely different for mu grandparents and their 1930s rural community.)
My take is that such a storyline would have to be accompanied by another storyline that would show a contrasting example of a couple of an arranged marriage who are either miserable, or just tolerating each other; if not, it would all seem like a work with a political agenda, to send the message 'Oh look, arranged marriages are actually not so bad - honestly! See, they're actually a good thing!'

And if you don't mind me saying so, there's nothing original and subversive when someone living in a liberal culture starts arguing for conservative values only because they think it would piss people off and be oh so shocking.
Especially when it flies in the face of realism; I'm sure that there have been people in arranged marriages who ended up really loving each other and being happy, but I'm also sure that there were others who hated each other and were miserable, and I'm guessing that most such couples just got used to each other and developed bond out of habit, the percentage of being fond of each other vs being irritated by each other vs just being indifferent varying from case to case.As for the one example I know, I can tell you that my grandparents were the case of people who just tolerated each other grumpily, except for the occasional outbursts when they were scream and shout at each other (grandma once got so angry threatened to kill grandpa with a knife she was holding - fortunately, that was just one of those things people say when they're angry. neither he nor me as an indifferent spectator, took it seriously...), didn't seem particularly close, which wasn't surprising since they had very different personalities, and weren't exactly unhappy only because neither of them seemed to ever had any idea that there is such a things as romantic love (except maybe as this thing that other people like to talk about and watch in movies...). At least I can guarantee that this was the case with grandma, who was very traditional and patriarchal (religion, hard work, taking care of family, that's all that matters), I'm pretty sure she had never been in love and didn't seem to have even an idea about it (I knew her well, because she talked a lot about her life, her father, family, everything)... She used to make me laugh whenever she'd see a movie kiss on TV and start complaining how terrible and immoral this is... but then one time she mentioned that sex, on the other hand, does not shock her, it's just what people do in marriage but it's no big deal, and that I shouldn't think it's something enjoyable because it's really not.

That's just... sad. But they did live together for over 50 years, had and raised children, didn't divorce, didn't kill each other and neither of them had an affair as far as we all knew, so I suppose that's what's considered a relatively good marriage among people who practice arranged marriages?
Now, maybe Vulcans could be portrayed as being different because of their telepathy... but that still wouldn't help the impression that the writer is just trying to say "oh look, arranged marriages can be really awesome! Seriously!"