This is true. I personally don't think following the rules is a big deal. You're essentially getting 10's of thousands of hours of development for free. The only price you 'pay' (if you can call it that) is you have to release any changes you make to the codebase. You don't have to release any of your own stuff not directly related to Stella. Of course a donation to the project would be appreciated, but even that is optional. It is literally one of the best deals anyone could hope for.
And an easier work around would be to use the cart reader to dump the rom to flash memory and then send it to the newest version of stella.
I'm just wondering, as I'm sure, many others, if Atari is trying stop them with a court order... Or tie things up in court... Less competition to their upcoming ataribox?
They shut down the Atari book out of the blue... That was on Kickstarter.
A lot of speculation until we hear an official statement.