Based on the struggles for my own Vtuber friends when they were getting set up, Marigold is the one who would have to struggle here. Typically if streamers do a collab they each still have their own streams up and just use a little image file to represent when the other is talking (if they even go that far), and streaming equipment frequently isnt very portable. Although I guess since they have actual AIs and such, having a laptop and webcam setup thats just as good as a proper 2-3 screen desktop tower isnt actually that far out of the realm of possibility.
Its probably an accident, but a V-tuber being able to just casually move their rig around with minimal issues is probably actually a logical consequence of the world they live in.