This has been true for a while, but it isn't anymore. The latest SSR and BRV are exceptional and I haven't seen the new BWV but I've read good things. It almost looks like DVC has listened to owners about bland refurbishments. It's a share theme was removed from OKW and BCV, but at least the trend is now upwards.
We can discuss how Riviera themeing is a bit superficial (and it is, in my opinion). And yet it's very much beloved, to the point it's difficult to book at 7 months year around, so what do I know?