As the title suggests - After all these years is there a fix yet?
Most spin bikes that don’t work with Zwift are that way because the bike manufacturer does not want it to be compatible with any software other than their own, so they can keep you in their software ecosystem and charge you a subscription. Some of them can be made to work via the third party QZ app (qzfitness.com). I would ask about it in the qdomyos-zwift Facebook group if you’re curious. If you own one of those bikes, that’s probably your best option. If you are thinking about buying one, I would avoid that purchase if Zwift compatibility is important.