There are a lot of feelings of inferiority amongst photographers, thus there is a lot of posturing amongst photographers.
There was a time (and it still occurs) where photographers would claim that "they don't use zoom lenses because primes are so much superior". "I zoom with my feet" was a common phrase. There was probably a time where this was true, but the sentiment has lasted long after the zoom hardware has improved.
You may also remember this sentiment regarding auto-focus and auto-exposure and well, just about every new development.
Humans are complex, so there are many other reasons why photographers avoid change. I remember the rumblings of moving from view cameras to 4x5, and 4x5 to 35 mm. I'm sure there were many heated exchanges between those that refusesrefused to switch from glass plates to film.
The best equipment is the stuff you have with you. Go have fun and take pictures. If you're happy with your pictures (or even if you're not) don't get sidetracked with other photographers telling you how you're supposed to be taking pictures.