And he doesn’t have the understanding that a secure mechanical contact is superior to soldering for electrical conductivity. A quick internet search would have helped.
The best connections are bare wire (i.e. no connector).
If connectors are used, the best and most reliable method of assembly is crimp and solder.
Set screws are problematic because if they’re made of copper they won’t stand up to the torque; if made of steel they will, but do you want ferrous metals in your signal chain?
High-end connector manufacturers may solve that problem with exotic bronze alloys, but you’re unlikely to find advanced metallurgy at the budget end of things.
If mechanical connection was superior, the highest-end equipment out there would be wired point-to-point with wire nuts or (preferably) Wagos. But if course it is not.
