Yes, I followed that drama as well and the did eventually make the newer firmware available to HA and similar though that doesn't exactly negate anything I said. For new features/fixes you are dependent on the manufacturer but that's the same everywhere. The big difference is that if Linus' switch company went out of business then his switches would continue to work the same way they always did (bugs and all). But I do agree with you Z-wave isn't perfect and does sometimes require a little more knowledge to work with.
Thankfully I'm all set currently (aside from the SmartThings rug-pull that I have to deal with and finally move everything remaining to HA instead of using my ST hub as just a controller from HA) and I'm just going to sit tight over the next few years and see how things shake out before I upgrade/replace any of my gear.