Not necessarily. I have had “Device Health Check" disabled almost since it was introduced and I have good Zigbee and Z-Wave meshes. However, over the last 3-4 days, there has been constant notifications of rotating devices not responding - both Z-Wave and Zigbee. Despite them dropping off and popping back online repeatedly and randomly - both device-wise and timing-wise, none of them were ever actually inaccessible.
Then earlier today, without changing anything, all is calm and I’m no longer getting notifications - just like it’s been for many months.
what are you getting notifications from? I’m never received a notification from the app when something gets marked unavailable and i have device health turned on.