My memories of living in the UK is that there's a weird disconnect where "everyone walks" so walkers are treated as in-group and supported in their hobbies of walking, while "only lycra-clad fitness freaks cycle" so they're an out-group and demonised. This also extends to "how dare cyclists not need to pay road tax" when pedestrians also don't and also have essentially the same requirements for road surface quality, and lead to the same resurfacing requirements, as a bike.
Also, the UK romanticises the countryside — not just because it has some nice bits, but as part of its own national identity — and the imagined ideal when I was a kid was some old guy with a flat cap and a walking stick wearing tweed as they walk through it, not a cyclist.
Basically the imagery of 1974 J. R. R. Tolkien Calendar[0] (how did that ever happen?) crossed with Last of the Summer Wine[1].
[0] https://www.abebooks.com/book-search/title/1974-calendar/aut...