Why are you just not honest to people asking questions and tell them Homey itself is the cause there IS no healthy Zigbee environment?
@op
There is a known Zigbee issue that for many keeps throwing out zigbee as a whole.
See last stable release note
If you have an IKEA air Quality zigbee device, I was told in pursuit of my legal case that that one caused more issues than others. Worth a try. Of course they didn’t bother to inform anyone else.
Just be aware information is limited, issues remain unresolved, and Homey has been more than overtaken by prebuilt Home Assistant boxes for half the price.
There, indeed if you want for some reason to readd a device, just pair it again and all the automations keep working.
Get out while you can, I did.