low spoke tension is just asking for problems.
a quality wheel is not the rim,nor the hub,neither is it the spokes.
It’s the build.
There’s nothing magic about that,anyone can do it.it just takes time.
If you’re selling wheels then you can’t afford to spend too much time on a wheel because it makes it unprofitable.I’m not saying they’re all bad.neither am I saying they are bad.
Just that if you spend 3-4 hours per wheel yourself,with decent(doesn’t mean expensive) components,then you’ll have some wheels that ‘stand’.
And if there is a problem,then you’ll know what it is and how to fix it.