My biggest issue with Thread is (AFAICT) it gives each device access to the internet. That's the absolute last thing I want and the reason I went 100% Z-wave (with a handful of legacy zigbee devices). I want a single point of local hardware that my devices talk to and that hub can talk to the internet as needed but I don't want to have to vet every device or deal with companies going out of business.
As it stands now I don't care at all who made my Z-wave switches/bulbs/plugs, they could already be out of business for all I care, that's not the case with 90% of "smart home" shit I see online. "No hub" means "absolutely not" for me because that's a wifi device with full access to your network (unless you segment) and the internet.
As it stands now I don't care at all who made my Z-wave switches/bulbs/plugs, they could already be out of business for all I care, that's not the case with 90% of "smart home" shit I see online. "No hub" means "absolutely not" for me because that's a wifi device with full access to your network (unless you segment) and the internet.