I bought some Chinese combo stands which look approximately like the first ones you cite, although I can't guarantee they're exactly the same.
For what it's worth they seem fine. Naturally if one were making a lot of money out of them every week, one would buy a major brand, but absent the "lot of money" factor they're fine. I mean, it's a stand, how bad can it be?
Well, OK, it could fall over and dump an expensive light onto an even more expensive person, but there's a limit to how incompetent something can be, really.
In the situation where there's never any money for anything (and frequently that is literally true - there's no money for anything, at least at the low end) - this sort of thing is likely to become more and more common, and as long as it's safely handled I don't see the harm.