Earlier quoted context omitted.
I don't own ZWave devices, but comments here seem to question their superiority. The range and battery life is likely due to the lower-frequency it uses, which is less congested and longer range. Typically, this will translate to a lower power usage (better battery life).
Linus tech tips has done a few videos on his smart home (z-wave) and he does not seem overly happy with it.. I'm really glad I went Zigbee as its been almost completely pain free even with third party non cloud software. I can't fault it but I do worry about future security updates should something be discovered in Zigbees stack.
I agree it’ll likely be few devices that’s ever see an update but I think theoretically Zigbee proton supports OTA from the hubs. I know home assistant supports automatic OTAs from a handful of brands.