Popa:
It seems clear that a shana rishona can have a significant part in shaping a marriage.
Given this:
If a person will be learning that first year then, as I wrote earlier, their marriage atmosphere will be different and elevated that year. And because it is the first year of marriage, this elevated level of the first year will significantly shape the rest of the marriage, even after the learning switches to part-time.
I’m not saying that’s the only way it can be done nor even that it is the best, all things considered, for all people.
But it’s (very) good enough [to the point] that, yes, I can see it being a deal-breaker for some people, and for this reason and not for yours, with all due respect.
Torah613:
Of course, any learning has a positive impact on any marriage. But full-time learning is not comparable to part-time learning, and year one of marriage is not comparable to years two and on.