Of course 2 years of stress can lead to otherwise-good marriages breaking up. Didn't you know happy couples who divorced during COVID lockdowns? It was common.
To me, those seem like fragile marriages. If it wasn't covid, then it'd be an illness or disability. If covid unearthed ideological differences, then it's likely that would have surfaced during other poticial events. If it was the financial hardship, that may have struck at another time. It's not that 2 years of stress can't destroy a marriage, it's just that it tends to destroy the weak ones.
I also didn't know any couples to divorce during lockdown.
Sure. I’m just arguing that “Here’s an opportunity to sacrifice for 2 years and put ourselves on a solid financial footing” is different from “the world is collapsing and we have to make the best of it”.
I also didn't know any couples to divorce during lockdown.