Cman of today isnt CMan of yesteryear when I started. Either the competition was not as good or CMan quality has gone to junk. I'd say its both.
I will agree with your assesment of the quality situation, absolutely no doubt it isnt the same tool but its so much cheaper now, thats what makes it such a deal. If you were paying 10$ a set Cman is junk but for a buck a pop in sets with lots of big wrenches sockets etc its hard to beat. Throw in a few things a guy uses, no one says you cant refine or add a few things but at these prices a guy could come up to speed in a hurry.
Got a couple friends that bought some of those blow cases sets of a few things, ideal in her situation. I can open a box find a socket and tighten a bolt without having to bring something etc works great.
I have a load of Cman, over the years, some I inhereit, bought lots over 30 yrs, have a half a dozen sets of general hard lines, I bought a set in about 80or so, the biggest one they had, cost 3500 or so at the time. I had walked on the truck a couple times, I already had a few things here and there but pissed my pants when I priced a few things and could see 15K not putting a dent in it and I wanted to gear up then, fast, didnt want to collect at the time so 3500 plus a couple boxes looked pretty good. Think I went to the bank. It had big everything, 3/4 taps dies, 3/4 sockets to 2 3/8, big wrenches in both flavors, all the sockets full spectrum.
There must have been a period of 10 yrs some sockets broke when new out of box, the ones that didnt fail early all but,,, maybe half a dozen out of 500 or so. Yes, have stripped a couple 5 16 and a 1/4 or 2, never any more, have found other options not used as not intended or bought a couple extra etc.
I have often thought about how much stuff a guy could get with a grand with careful shopping. Between Walmart, Cman, HF. It takes about 20 socket sets not including 3/4 in both flavors, but lets say automotive etc. At discount cheap most not more than 20$ and a few could be had for less, less complete but maybe ok, fill it easy for 400, stuffed for 5, wrenches about half a dozen sets, even tossing in a vise grip or 2, a channelok, a couple adjustables, a couple hammers a guy could be quite the warrior. I could make a living with it easy.