[syshum]

Zigbee and Zwave are open protocols and work better than WiFi Devices which are more often Cloud Locked to their Vendor with no ablity for local control, even the integrations with HA are often API's to the vendors Cloud Servers not to the device itself

No if you want secure, local control of your home automation you want Zigbee and Zwave devices not WiFi.

There is a TON of these devices on the market, and not just ikea like your other post seems to suggest