As Amazon conspiracy theorist in chief, I doubt this is the case. Amazon likes to associate with good Rust PR, this is just messy stuff that takes away PR bandwidth and that makes things more unstable. People associated with AWS (eg Shane Miller, Chairwoman at the Rust Foundation and head of the AWS Rust team) will have to play a role in this conflict, and the decisions they will make should be publicly scrutinized, but that's it.

The source of this conflict seems a somewhat long-standing tension inside of the Rust organization.