[JohnFen]

Interesting. It's hard to be sure from the vague notice, but it appears that the request is inappropriate. The only thing they state that could potentially apply to SO would be copyright violation, but they don't point to any actual instances of SO violating copyright. Copyright does not prevent people from asking and answering questions about a copyrighted thing.

[lotyrin]

Even if it did, I don't see how they could imagine that would apply retroactively, even with the "confusion" or whatever. "Please take down a piece of your property and of internet history about our product... because it reminds people of when it used to have a more permissive license and that's inconvenient to us as the people who want to restrict it."

[johntb86]

I don't see any reason to believe this was requested by the Anaconda developers. For example, it refers to the Anaconda developers in the third person: "For example adding a footnote in a 2014 answer to state Anaconda has started restricting commercial usage is insufficient and misleading, as they have restricted nearly all usage later."

This seems more likely to have been written by some third party who'd annoyed about the license change.

[Cerium]

Agreed, no signature, etc. I think it is somebody unhappy who wishes to hurt the ecosystem to hurt the company's future profits.