I think a lot of the problem is unDx mental health issues. Dyslexia makes it hard to tidy, and then depression means that getting through the day is challenge enough. OCD is very life limiting too, not just in a twee "Monica from friends" way.
When parents have very young and/ or SN kids, something like a deep clean seems so pointless, as it will all start again tomorrow.
During the toddler phase, I remember feeling despair at mashed banana being thrown on the walls I had just cleaned - it just seemed so relentless and never ending.
A cleaner can be worth their weight in gold, but very few people can afford one.
Most houses I go to are reasonable, except where the mum is depressed and the kids are SN, or have illness, and the dads aren't around. I try and steer the conversation to the garden.
I try not to judge, as I remember the feelings when my OCD mother wouldn't let me invite any friends around as, in her opinion, the house wasn't up to scratch and my friends would mess it. I wished for a more relaxed, normal house.
I think meeting friends in the park is a much better option for us all actually, get a bit of fresh air, and maybe someone should start opening chains of coffee shops all over the place or something like that!! Oh wait..... 