Nearly every photographer I know can tell the same story. When someone sees a good photograph they took, a viewer will say, "you must have a nice camera!" Generally, most photogs do have nice cameras, but gear is really not the key issue for them anymore than a tennis racket is the number one reason a tennis player will prevail. Does gear matter? Yes. But seeing a scene with a discerning eye, seeing the lighting of that scene and properly using the camera and lens to capture the moment is key.
I use primarily Olympus "mirror-less" cameras and Oly lenses. I like the size (typically smaller than other cameras (a bit technical) and very robust. But I will use my iPhone as a back up and have a few small cameras as well. As the saying goes, "its the archer, not the arrow." Hopefully you see a few bullseyes in my photographs.