I suspect most people just use contactless nowadays, Especially infrequent visitors.

> Especially infrequent visitors

I don't know a single resident who uses oyster (maybe kids? Dunno, I don't have kids in my social circle), infrequent visitors are actually the only ones I've seen using oyster and that's because they thought that was the only way to use transport

Many, many people use Oyster cards for monthly or annual passes.