We have to use the probes as per comp rules.
Chicken especially you need to make sure you're above regulation temp, I'm all for probes in such cases, especially thermapens which makes checking multiple thighs quickly necessary in competition format.
And since I have my thermo there already then it works fine as my feeler probe, thats why you only saw people using them, no need to carry two different probes
But my point for the big cuts ie, pork and beef, you simply cannot just assume that 203f, or 195f or wherever u normally pull your meat is done.
It will always differ and this is where my point of probing your meat to check tenderness comes into play. Beef, look for probe tender, Pork when the shoulder bone comes free, Ribs when you get a nice bend till the meat cracks but meat is still on the bone. These will occur at different temps depending on the meat. If you want the best cook you need to look for signs such as these, not a number.
Use your probe early in your Q'ing career to get a good feel for it, but as you cook more and more often you will start to appreciate that you simply do not need it to produce the best slow smoked beef or pork.
And I absolutely stand by my comments on H&F vs L&S. Again I am not alone on this thought and a little research will help you out, people take both sides of the fence on this issue but my point is there are two sides of the fence. I get great results with both, but why cook for longer if I dont have to?
Get a feel for what works for you, especially starting out, but the old rules on BBQ arent necessarily the best rules or the only rules and only experience will teach you that.