@thiccpaws
Of course, #zigbee is still a (big) thing. We have 50+ routers and end devices in use.

Tons of devices available for very little money. In particular if you buy them on Aliexpress etc

Great integration into #homeassistant using #zigbee2mqtt

For shutters/lights I am using #shelly relays (concealed installation in the walls). I am running #esphome on them but with the stock firmware they can also be used fully locally over WLAN.

For windows/doors I am using cheap #zigbee sensors that you can stick to the frame. A good Zigbee USB stick is around 30 EUR. I have also added several #zigbee relays in strategic places to make the network more robust. Also all fully local using #zigbee2mqtt integration