Ryzen has been Ryzen for a while!
Athlon are still around, Gold edition PRO, dang... Such a long, long time, super old architecture, " updated" somewhat. I think is fine when companies mix and match architectures and process nodes, provided they price accordingly. Older chip, newer node, has always been an upgrade, since the beginning of time. Newer chip older node, don't think it happens too often, but might have, as in fulfilling contracts with other foundries and such, well that another kind of upgrade.