> shows intent to obfuscate the origins

Good point. Reminds me of how if you poison one person, you go to prison, but when a company poisons thousands, it gets a fine... sometimes.

> it takes away the one payment that free software authors get: recognition

I keep flip-flopping on this. I did most of my open source work not caring about recognition but about the principles of GPL and later AGPL. However, I came to realize it was a mistake - people don't judge you by the work you actually do but by the work you appear to do. I have zero respect for people who do something just for the approval of others but I am aware of the necessity of making sure people know your value.

One thing is certain: credit/recognition affect all open source code, user rights (e.g. to inspect and modify) affect only the subset under (A)GPL.

Both are bad in their own right.