On top of what everyone else has responded - Glocks do have an in-trigger safety, but they don’t have a separate external safety lever or grip safety except for a couple of low production specialty versions - there is actually a reason for it, and other modern pistols have adopted the same logic.
At the end of the 1970s, it began to be clear to police forces around the world that revolvers were no longer sufficient sidearms (if they hadn’t already realized this). Criminals were appearing with increasingly more powerful weapons with increased magazine capacity; officers were being found dead or severely injured with empty revolvers and speedloaders in their hands. Police departments began transitioning to 9mm semiauto pistols, which was known as the “Wondernine” transition. This resolved the slow reload and ammo capacity issues of the revolver, but introduced a new problem.
Officers began to be found shot or dead with a fully loaded 9mm pistol in their hands, safety on, and clear evidence that they’d tried to pull the trigger. Turns out that under stress, officers were not remembering to actuate the external safety levers of the pistols available at the time. Or they didn’t have enough time to actuate the levers as they drew (some of the safeties on older designs are not that easy or fast to flick off). This was originally thought to be a training failure where officers that had transitioned from revolvers hadn’t been trained enough to make actuating the safety of an autopistol second nature - but then rookie officers who’d had no revolver training or experience began turning up shot or dead, and they’d had the full optimal training (of the time). Glock took a look at this, performed industrial ergonomics studies on pistols and shooting and came to the conclusion that barring any other mechanical issues, swiping the safety off was a fine motor action that was likely to get muffed under stress or time pressure. A ‘transparent’ safety that required no additional action other than correctly placing your finger on the trigger made the most ergonomic sense - just like most revolvers don’t have any external safety levers either. Such a system would be no less safe than a revolver with similar trigger pull weight and travel. The Glock 17 appeared in 1982 with no discrete external safety levers and the rest is history.
Most post-Glock combat pistol designs no longer have external safety levers - which, by the way, is what John Browning himself said should have been the case - or if they do it’s an added tacked on option.
Good recounting.
I will say the trigger on my Sig is not as heavy as a DA pull on a model 19. I like the idea of a grip safety (it doesn’t have one). Jeff Cooper didn’t like them but I’ve never had one be an issue on any 1911.