He's right in everything he says, but he leaves out one important fact. Most Government Model type pistols are non-striker fired. The mechanism is a pure SA, so the trigger can actually have a clean break, because it is simply a release of the hammer rather than a physical pull that actuates the mechanism. In other words you're not drawing back a striker with the trigger pull, and so it is easier to keep the muzzle on target. You can say the exact same thing about a Browning HP, or a Beretta 92 in 9mm.
FN and H&K have the partial fix for this by using the recoil to bring the striker half way back, but the trigger pull still must finish the job. 3.5lbs is about the minimum trigger pull on any striker fired pistol, because under that there is a good chance the striker will not have enough force to ignite the primer. There is only so much you can do with them, and you can never have the same sort of glassy break on something like a Gold Cup, or a Trophy Match. If shot placement is key, as so many experts say, then it just follows that many people would want the advantage of a trigger that breaks so cleanly it's almost a surprise.
I think people's love of these pistols has less to do with the caliber than with JM Browning's design, and their ability to increase accuracy and improve shot placement. As he says, you can certainly miss just as easily if you can't shoot straight, but if you can, IMO, they definitely have the edge on a striker fired pistol.
Why is every JM Browning, Government Model, copy a ".45", or a "1911", and not every striker fired 9mm a "Glock"? I think it's because of what pistols are currently popular and widely available, coupled with ignorance about pistols people have no experience with, but there is no difference. If FN, H&K, S&W, and Glock all make plastic striker fired 9mms then by the same reasoning they're all the same gun too, and we may as well just call them all "Glocks".
BTW I've owned and shot Glocks since the mid 1980s, and I like them fine. I carry an LCP. I appreciate pistols for what they are and what they do. If there was one that had all strengths and no weaknesses the market would give us only one choice because that's what everyone would buy in varying grades of finish. I prefer the myriad of choices and strengths and weaknesses.