Yep, and nothing we haven't said in other threads :-)
It's common wisdom that is totally at odds with my experience. First Smith 1917 in the mid-90's. Since then another 1917, a 1937, a couple 25-2's, and a Colt 1917 Fitz clone. In past time I've gone years without shooting anything but .45 ACP revolvers. I have many thousands of rounds down range and have carried loaded moon clips various ways including loose in a pants pocket while hiking. I've seen more magazines fail than moon clips.
I've got to wonder if it's half moons that started the bad rep or if some of the moon clips in other calibers were really that flimsy. I'd hope there was something behind the rep but just haven't seen it with anything I've shot.