Part of the point behind Ventoy is that you don't need to prepare the USB to be bootable. You can just copy/paste the whole iso into Ventoy and it will be bootable. New release comes out? Just copy it onto your USB drive. Don't even need to remove the old version of you don't want to.
Makes things much easier in the tech world for having a single USB with 50+ bootable tools and installers on there like with MediCat (which uses Ventoy as a base).
Only thing I've had issues with booting from Ventoy is the ProxMox install iso. Everything else has worked first try.
Pretty sure the legitimate campaign spending wasn't what he was referring too.
The propaganda machine was also being funded by international entities (e.g. Tim Pool being paid by Russian state media employees).