It is just that: the community is likely small enough to not rip a great game like this and kill any new initiatives. I greatly support this. I'll gladly pay for the hard work this game took when it will be available (but not any sooner).
I see no technical reasons it couldn't be ripped and it probably already has been but people who paid for this game simply don't want to spread it and kill the few new games that we still get, and they are right IMHO.
Technically it could play fine on the SD card I'm sure. If I would own the game when it would be released next year, I would love to make a rip so I can play it on my SD card, I don't want to swap carts anymore. But I would never share it.
Oh and who wants to play emulators ?