That's crazy. Being a young tech enthusiast I bought all of the gizmos and gadgets for my KK when I first started. Meater, Firebird 2 Pro, Thermapen, K-Type Dome probe, etc. In the ned, they just added more stress than they were worth. I HATE cords and the most reliable tech I used were the wired probes. In the end, I sold all of it and am back to the basics of my KK. Fill the basket full of lump, light a chimney of lump, pout it on, set the vents, and away it goes. I sleep 100X better and my cooking is 0% stress. Prior, I was checking the data, adjusting the probes, removing probes to wrap or mess with the meats, and it all just became such a pain int he ass. Furthermore, I live in Wisconsin so it gets cold as hell and most of these gadgets are all China junk and don't hold a charge or become so brittle when I cook at it's below 0F.
In full transparency, I do use two RFX probes and those are handy at times. I had my growing pains with those as I had a few bad probes that needed to be replaced. The ones I have now work great but I try my best not to use them.
Thermapen One for the win. It's the only BBQ gadget I can't live without after all of that.