This was my path. After Philips Hue required that I make an online account with them and wouldn't let me use my local-only devices without it, I rage bought a Sonoff dongle and transferred all my HUE lights over to it and then unceremoniously threw away my hue bridge. Zigbee2MQTT is working great. I'll always pay more for freedom from corporate project managers subscription metrics in my smart home devices. This philosophy works too, I've been pretty deep into home automation since 2015 and haven't lost even one device due to deprecation or sunsetting yet.
This. Also, at least being offline-first should be a must. I went to a friend’s house, and she has a system to enable and disable lights, water, etc. There was a power outage in the area... she couldn’t enable the water to flow. What a joke.
