Why should that tip off your BS detector? There's a long, long, long, long history of amateurs lavishing far far more attention on their rigs than pros ever could. It became a trope in Renaissance literature.
Basically, people get rich doing other things and then dive into their hobbies buying all top-of-the-line gear. Whereas the pro started with nothing and learned the basics, so they are able to get much much better results from substandard gear.
I'm pretty sure a professional would rather buy a dual-socket Xeon based machine (say 2x E5-1650 v4) that has 4x the memory performance for closer to half the price.
A lot of professional photographers don't know much about computers and CPUs. Remember that "professional photographer" crosses a very broad spectrum of photographers, since the bar is basically "I charge for my work".
For better or worse, many professional photographers often rely on the advice of friends and salespeople for "something fast enough for what I need to do".
Basically, people get rich doing other things and then dive into their hobbies buying all top-of-the-line gear. Whereas the pro started with nothing and learned the basics, so they are able to get much much better results from substandard gear.
Holds across all creative disciplines.