Correct, I'm baffled by your article. What's the point? I feel like I'm missing some context, which is why I mentioned not knowing anything about Asset Universes.
The fact that other people _can_ have virtual channels only seems useful if they _want_ to have virtual channels. So why would they want to advertise support for relaying payments denominated in a CSV token that they don't own (because if they did own it, they wouldn't need a virtual channel)?