You should seek feedback on 9mm 1911s on the two main 1911-focused forums, IMO. I don't think you're getting the best info here.
I'm coming at this from the perspective of someone whose numerous 1911s are all chambered in .45 ACP. While 9mm is my favorite caliber, I just can't quite make myself buy a 1911 in 9mm. I haven't even been able to talk myself into getting one in .38 Super yet, although I keep telling myself I will eventually.
That said, there is nothing wrong with 1911s in 9mm. The received wisdom about reliability issues with 9mm is beyond stale at this point and derives from former issues that have been non-issues for a long time. Manufacturers addressed these problems years ago.
As to the "why" of a 9mm in 1911, I really don't understand the confusion. A quality 1911 in 9mm is an incredibly sweet shooter -- so much so that shooting one has almost been enough for me to overcome my peculiar aversion to owning a 1911 in anything but its original chambering. (This hang-up of mine goes beyond just the 1911, by the way.) I'm fortunately not yet of the age and/or physical condition where heavier recoil causes me any physical discomfort, but the soft shooting characteristics of the 1911 in 9mm are appealing to many folks who want to shoot 1911s but who can't tolerate recoil as well as they used to. Ask Bill Wilson, Ken Hackathorn, and numerous other big names in the 1911 world which caliber they spend the most time shooting in 1911s these days. Plenty of other people just enjoy the fact that an all-steel 1911 makes the hottest 9mm SD rounds feel more or less like powder-puff target loads. OP, I suggest you pay a visit to 1911addicts and talk with (or read the comments of) the numerous 1911 fanatics who shoot everything from stock Colt and DW 9mm 1911s to various semi-custom 9mm 1911s to five-figure 9mm 1911s from the most highly regarded custom 'smiths. You'll get better information, and I think you'll see that whatever concerns you have are essentially unfounded in 2022.
By the way, I find the constant exhortations to "just get a Hi-Power" when anyone asks about 9mm 1911s to be beyond grating and irritating. They aren't even close to the same gun. ("Just get a P210" would at least make somewhat more sense, despite the P210 also being a very different design.) I love (Browning/FN) Hi-Powers for their elegance and historical pedigree, but there's nothing special about them at all as shooters or from a build-quality standpoint. The stock triggers are bad to terrible (and removing the mag disconnect alone doesn't come close to making the trigger good), the accuracy is generally unremarkable, and they're not particularly durable (especially the old forged-frame versions). None of that is the case with a higher-quality 1911. I imagine people reflexively say "just get a Hi-Power" due to the JMB connection, but I just find that grating and irritating on another level, since JMB wasn't even the primary designer of what ended up as the BHP.
