A master with crappy tools will most likely outperform the novice, with all other things being equal. But, I don’t remember any masters of any discipline intentionally choosing crappy equipment.
Exactly, except I wouldn't count on a master with really crappy tools accomplishing much of anything. Give the best shot on Earth a 1-MOA AR-15, and I, a low-level amateur, will mop the floor with him at 100 yards, every day, all day.
I hope nobody is claiming a mil-spec trigger is as good for precision shooting as a high-end trigger, because it isn't. Mil-spec triggers and precision triggers are different tools for doing different jobs. They are not interchangeable. If they were, top target shooters would all use mil-spec triggers, because they are cheap. Those guys aren't morons.
There will always be people who dump on good equipment and say it's not necessary to have good stuff because good old granddad could give a mosquito a vasectomy with a musket at a thousand yards. That's not true. It is necessary if you want the best results. You build your rifle for its chosen purpose. Serious precision shooters buy expensive triggers, and it's not because they are "Band Aids."
Handicapping yourself with inappropriate tools is not a sign of superior competence.
I showed up at a precision rifle class with a mil-spec trigger, a varmint scope in MOA, and a gas gun because I had no idea what I was doing. I got away with it because I have a good trigger pull and I managed to overcome the inherent difficulty of shooting gas guns well enough to hit steel, but my instructor was surprised and commented on it. At the very least, everyone else had an RPR, and there were plenty of fancier rigs.
He recommended more suitable equipment, and that's what I went out and got. I passed the course, but I would have done better with the right tools.
Not to toot my own horn, but I don't think a person who can shoot sub-0.5-MOA 5-shot groups repeatedly from a prone position with factory ammo is not paying attention to fundamentals, regardless of what kind of trigger he has. It's not just the gun. I practiced and learned. Give my middle-of-the-road precision gun to someone who hasn't trained, and he will shoot bigger groups.