I’ve seen this - and in real life too.
Often had coffees with female friends who are going through a rough patch and feel dissatisfied. Been there myself several times. The ones that egg each other on often do eventually split up - one such friend now mentioned that she wished she had had some therapy and found a way to ride the rough patch out as the divorce was acrimonious and her kids were severely damaged by it. And the quality of her life as an older woman with no joint income stream, completely alone, is pretty poor compared to what she had before. Yes, her DH was a bit of a plonker and always working, but so was mine at the time.
Both our DHs struggled with trying to make progress in their careers and be present as fathers, especially when the kids were younger. We bought into the middle class thing of after school clubs/music lessons/sports training that, frankly, was a waste - my DCs gave it all up by GCSEs and have no interest in resuming any of it at uni or beyond. Waste of time, money and effort that also feeds the dissatisfaction cycle if your kids are not in the 1st team or make it to county level, or didn’t get a distinction in Grade 8 by the time they were 11… mainly because they didn’t really want to do any of it.
Just this morning my DH expressed via text the feeling he was a shit dad as he is in the US all week with work and our DS has A Level mock exams and he can’t be here to help with college runs and moral support etc. He’s also feeling guilty that I have been left with having to do all the Christmas shopping for this family as a result.
If I had listened to my friends - or the advice pages of the DM or MN trends - and left him like they had left their DHs our life would be shit now too, but we rode it out and are now closer than ever and looking forward to retirement one day as we have so much we want to do together.
I think there is definitely a narrative that mundane, safe, family life is somehow ‘settling’, that women deserve to be treated like princesses (seen that a lot on here) when actually emotional stability, mutual respect, shared values and being treated like an equal partner in your marriage are actually the most essential components of a long relationship. Obviously abusive relationships should be ended asap, but bickering and stressing over transitory family stresses are all part of the ‘for better for worse’ bit. You can’t have the ‘better’ without an occasional ‘worse’ bit. You can’t be ‘happy’ all the time. And would you really want to be?