The bikers in the UK are invariably 'getting on a bit' and those that have decided to splurge their pensions and not spend £££ on holidays (due to covid) have perhaps spent it on newer bikes? My 70 year old neighbour has a new Street Triple and is already complaining it isn't fast enough.
Another 60 year old retired guy with a rebuilt spine who walks with a stick and is in continuous pain is zipping around on his R1200GS. At least my other neighbor has an RD400, SR500, an old Sportster and a 400/4 that I know of. He has a lockup somewhere and is slowly moving bikes into his new garage at home. Lots of tinkering behind closed doors! Occasionally we get to see what he has this month. Also retired and well into his 60s.
All the bikes I see on the road are much newer than airheads and the club I belong to is all modern (expensive) stuff they take to the dealer for servicing. I haven't seen another airhead on the road out here in 3 years. Some GS but mainly fast 4 cylinder Japanese stuff. The occasional 1950s or earlier British single. I'm on the road to the coast from the Midlands, so small groups of very fast bikes, going very fast.