I'm not sure about the data for pedestrians being hit on rural roads, though the UK has very low rate of per capita pedestrian fatalities overall, among the lowest in the EU according to [1]. Anecdotally I have never felt unsafe walking on rural raods. I can see how some of the narrower "A" roads (major single carriageway roads with no central reservation, sometimes heavy lorry traffic) might be, though these usually but not always have pavements for pedestrians and if not there's generally an alternative.
Either way, compared to my (admittedly limited) experience of suburban and rural America there is still a big (and welcome) difference. I hope that any downward trend can be arrested/reversed.
[1] https://ec.europa.eu/transport/road_safety/sites/roadsafety/...
No. It's not. You just can't expect drivers to see you so you have to take care and step more or less off the road if there isn't a wide shoulder available for your use at that spot. It's not a big deal because cars aren't that frequent.
It's really no different than any industrial workplace where it is expected that the lighter traffic will make way for the heavier traffic.
I found something that kind of supports this notion but isn’t really conclusive
https://assets.publishing.service.gov.uk/government/uploads/...
Wonder if you have a link to share?