I have half dozen Hue bulbs, and they seem rock-solid - far more stable than my Lightify bulbs.
The HA SkyConnect does seem to be a factor. For a while, my Lightify bulbs were the last thing on my old Samsung SmartThings hub (via the HA integration- basically using the ST hub as a Zigbee radio/stack), because they operated more reliably there.
Yes, every line-powered device is (probably) a repeater. Many light bulbs are, with the caveat that you must keep them powered all the time. Having a bunch of repeaters drop offline will cause fits with your mesh stability.
One of the features of my Tempest PWS that is a real blessing over the summer in lightning detection. My rescue beagle does not handle thunderstorms well, and the vet recommended some anti-anxiety meds - but they need to be given well before the storm is audible to some very large ears. So, I have a Home Assistant automation that sends alerts for > 5 strikes within 60 miles.
You can also get the Blitzortung integration for Home Assistant, which will let you generate an alert from their cloud data.
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In 2019, Boston Consulting Group researchers “found that between 25 and 80 percent of gas stations nationwide could be unprofitable in 12 years.”