From their ToS:
>In addition, Content found on or through this Service are the property of GitRoyalty, Inc. or used with permission. You may not distribute, modify, transmit, reuse, download, repost, copy, or use said Content, whether in whole or in part, for commercial purposes or for personal gain, without express advance written permission from us.
So anything obtained through this service is proprietary now. After reading this, it's clear why this doesn't work with the GPL.
If software obtained through GitRoyalty remained free software, I honestly might have been fine with it. But as is, no thanks.
>In addition, Content found on or through this Service are the property of GitRoyalty, Inc. or used with permission. You may not distribute, modify, transmit, reuse, download, repost, copy, or use said Content, whether in whole or in part, for commercial purposes or for personal gain, without express advance written permission from us.
So anything obtained through this service is proprietary now. After reading this, it's clear why this doesn't work with the GPL.
If software obtained through GitRoyalty remained free software, I honestly might have been fine with it. But as is, no thanks.