I've done enough Butts & Briskets to know when to try probing, it's not rocket science. On the other hand, as I've posted, I cooked my 1st Tri-Tip last night. I stuck the maverick probe in it because I really didn't know what to expect on my cooker. Patio Daddio's recipe said to shoot for a cooking temp of 350, cook for about an hour on one side to 120° then flip, cook for about 1/2 hr on the other to 130°. I know my Traegers burn on the hot side. So I set it on 325. The T-T reached 120 in 45 min. & was done in an hour. Without the temp probe I would've over cooked it. I probably won't use the maverick on the next T-T but I think it helped me on the 1st one. So, I think good thermometer can help out in certain situations. But, I don't think they're something anyone should place all their faith into all the time.
S&W 500 Mag Traeger 075 (2) Traeger 070 a Spit a UDS ORANGE Thermapen