To all of this I say:
Yes, and?
It's going to take work to replicate the exact scenario, much like anything else that is pushing new tech in the industry, and I still maintain that the donation potential would be worth it.
On a smaller scale, individual streamers could test the waters with single-player, moddable games, not necessarily Minecraft. Learn the process as you go, turn the scuff into content itself. As time goes by, more streams are in the bag, more experience and tech know-how in how to set it up, and to teach their friends how to do so. Slowly expand to two people streaming at once, when that process has been nailed down, add another, so on and so forth.
But, really, the benefit I see is in solo-streams, giving added benefits to regular donations when activated. In the short term, early days of using it will have a sizeable boost in donos, which will readily stabilize as time goes by. Stable does not mean "bad" or "not worth the effort", as this sort of thing could be used to give supporters more value for their dollar, incentivizing them to stay/remain as regular supporters. I see this as adding to the value proposition of the streamer, where I would argue that the start-up cost - while initially high in comparison to immediate returns - is something that will be appreciated in the long-term, where it shouldn't be seen as a novelty, but something in the same vein as "funny sounds being played on stream tied to donation number".
Once normalized, it would be up to the streamers themselves to innovate, but that's a different conversation altogether in terms of talent vs streamer ability to maintain an audience.
