yes, welcome in onboard connectors worlds sometimes is more dificults to remove them, the white tab can be damaged or cable is too tight. Specially if home-made cables is used
So when I’m look original USB-C cable delivered with VIM, I’m doubt that wires for power are better than AWG26. For your reference why you should be safe, checkout below links that about USB cables. So how long cables exactly you plan for the connections?
about power supplies, I know that here is some discussion from severals users about their experience of their powersupplies. Can happend that RPI3 PSU 5.1V is better then 5.25V. see that thread
btw, so your plan is 20 PSU for 20 VIM units or some PSU sharing with VIMs or?
sometimes is more dificults to remove them, the white tab can be damaged or cable is too tight. Specially if home-made cables is used