He probably had more impact on the world of handguns today than any other single individual not named "Sam Colt" or "John Browning".
Not that he was necessarily a design genius or brilliant gunsmith or whatever. He was an engineer who owned a company that hired designers and gunsmiths, but the end result is that he made a pistol that was dirt cheap to manufacture yet adequately reliable, accurate, and durable.
I carried Glocks for years. I likely will again at some point. I was a moderator at the GlockTalk forum twenty-three years ago. I even had a Glock desktop theme on my Win95 computer. (Remember desktop themes? Mine played a .WAV of that Tommy Lee Jones "nickel plated sissy pistol" quote when I shut it down.)
At the same time, there's no denying that Gaston's dirt-cheap-to-manufacture pistol really kicked off the race to the bottom that has consumed the handgun market over the last thirty years.
So my feelings on hearing this week's news are... complex.