Indeed.
I'd say that it was weather and gas prices that make a 300nm x-c a PITA in the UK rather than any limited view of the world or an inability to fly all day. I don't think anyone is disputing the fact that 300nm is an easy days flight, but actually, it is indeed 500-600nm if done in an A to B to A or at least 400nm in ABCA fashion and a factor here is the large number of fields that close relatively early, also because of the cost, it is not unknown for people to wait until they actually have a reason to go somewhere, which may then entail a night stop for their own reasons. Until JAR/EASA it was a CPL requirement to do the 300nm in one day for the record.