Really curious about your take on rosin. It’s not one I’ve encountered.
Lots of folks with religious (ie not based on scientific evidence) objections to pretty much any solvent you can name.
Never encountered “CO2 might make poison” nor “rosin is damaged goods because: heat & pressure”. Can you offer any sources for folks who might share your opinion and/or want to dig deeper?
are you willing to explore the possibility that you’re wrong about rosin?
what temps do you imagine rosin is subjected to? Can you compare that to the temperatures used in any of the other methods you mention?