I agree overall except for whats highlighted. Its easy to keep millions of guns functioning and even cannibalizing some to keep others running when you have basically an unlimited budget. With that kind of money anything is possible. But as civilian shooters we must pay out of our own pocket to keep them running. Quality parts are not cheap, quality gun smiths are not cheap. I had a WC ambi safety added to my 1911. took 3 weeks (wait time. Busy smith) and $200. While $200 wont break the bank it certainly wasn't a fart in the wind. And thats just one safety + instalation work/time. Now this smith is local. If he wasnt I'd have to ship it of and that would cost more money. Now I want better sights (at least $100) a better trigger and a new main spring. On top of that I'll eventually need to get the ejector tunned and replace springs.
Of course if a gun requires a lot of cost to be maintained that's a problem and I agree 100% there, but as I read it everything you listed is really an optional thing you wanted for the gun. To me that says the 1911 may not be the perfect design, and it isn't b/c there isn't one, but when I say "hinky" I mean it required gunsmithing to even function reliably. I admit I honed in on his hyperbole that a 1911 that functions well is as rare as a Glock that doesn't. I read that as him saying the design is inherently flawed or at least severely less reliable than the Glock design, and I can't see that being the case.
1911s get endlessly tuned, but the feel I get from the video is he's saying that the 1911 inherently isn't a design you want to go into combat with, and that's just not supported by the data. The GI issue 1911s worked extraordinarily well for decades and were maintained with little more than parts replacements. I can certainly be mistaken but my impression is that your 1911 didn't fail, you upgraded it with different features. To me that's different than what this guy was claiming.
Now some 1911s no doubt are very hinky but that's a function of manufacturing IMO as opposed to an inherent design flaw of 1911s. Comparing a particular high quality manufacturer like Glock (and they are very high quality) to just any 1911 isn't fair. Compare it to a high quality manufacturer like RIA and I seriously doubt his claims would be supported.
Like I said I'm not really a "1911 guy". My SA of choice is the Hi Power and there is no 2nd place for me, but few designs as flawed as he claims survive over 100 years and are used by millions of soldiers. I agree with the point above you can't just go with what the military picks, but the 1911 is one of those weapons that has so much usage data and feedback from the field soldiers we can take their praise for it as strong support. Even with parts supplies feedback from field soldiers wouldn't be so positive if it was constantly in for repairs or adjustments.
My friends are going to laugh at me "defending" the 1911, b/c I really am not big on them for me personally. I have never gotten comfortable with carrying one cocked and locked, or any SA for that matter. Still that's all personal stuff, not design. He doesn't like the grip safety. OK, some don't, but that doesn't mean it's an inferior gun, just a different one.
There may be more reliable designs than the 1911, and maybe the Glock is one, but the idea that there is some massive divide between them I find unsupported by the data.