I suppose there are some cultural differences, e.g. when I went to Japan it certainly seemed that people there were more focused on hygiene than a lot of people I know in the UK, but I've no idea whether we'd rank low on the world's hygiene league table.
My impression from previous threads on how often you wash bedding and underwear is that, as in many other aspects of life, we're a divided nation.
I am probably at the 'low standards' end of the spectrum. But my standards are bang on normal for when I was growing up in the 70s - I don't think antibac products existed then, and many people didn't have showers, washing machines or dishwashers, kids played out a lot and weren't disinfected when they got home, people had flannel washes at the sink most days, in my house we bathed once a week. I do shower every day now, but otherwise I don't think my approach to hygiene is much different from my mum's.
In my experience (might not be representative), it's the younger people I know (in their 30s and 40s) who seem to be very hygiene-focussed and carry antibac wipes everywhere, use a lot of cleaning products, do a lot of laundry, etc. Maybe because they've grown up with more cleaning appliances in their homes and in a more consumerist age so are used to buying products for everything?
Other than age, I have no idea why there's such a disparity. It doesn't seem to relate to ability to buy products, and the health of the household doesn't seem to have any relationship to how hygienic the inhabitants are - so maybe 'low' is actually okay?