He basically invented triple cooked fries at the fat duck (precooked at 70° celsius then fried twice, with airing/freezing steps in between), and it's a pretty close approximation of them done much simpler.
For the same reason I would say, don't bother with thin cut with his air fryer version. Go thick or don't bother.
I try to manually do the time@temp safety thing, but admittedly I usually overcook it just to be safe. So, I could see the combustion.inc being a game changer for grilling especially, and I already get rave reviews. I'm going to pick one up, and possibly also one of their grill thermometers.
The previous comment about it being a cooking thermometer for nerds is bang on! I dunno how much it really helps improve my cooking but it gives me an incredible feeling of being in control! I love it!
The truth is rather complicated [1]. Most of the barbecue masters use temperature as a guideline but actual tests of tenderness as the final arbiter. They cook until the meat reaches a particular temperature and then begin checking for tenderness at regular intervals. The process can vary a lot even between two briskets of the same weight, purchased at the same time, due to individual differences between animals (the amount of connective tissues and collagenases present in the meat at cooking time).
Still, having the temperature information helps a lot, especially the surface and ambient temperatures provided by the CI probe. This can help you maintain the cooking temperature much more accurately to avoid excessive dryout.
[1] https://www.chefsteps.com/forum/posts/collagen-conversion-wh...
I cook on a kamado, and generally don't have the fuel and patience for a brisket, so I just don't tend to do them. I prefer to just do the whole thing on the fire, but my ideal brisket would probably be ~12 hours in the kamado, then 12 (or more) hours in the oven. But for whatever reason, I just don't like doing that. "Feels like cheating" or whatever. So butt roast and turkey and prime rib are really my go-tos.