In this case though, would it not be that then if Facebook did have a processing agreement with Amazon with which they communicate information, and this agreement stipulates that (in order to comply with GDPR) data they sell to amazon must be deleted upon request, and Amazon does NOT do so, this would make amazon liable for breach of contract instead of facebook being liable for breach of GDPR?
If so, all fediverse instances would need is a copy-paste agreement when two instances federate that data from one must be deleted on the other upon request.
What RH% were you reaching? In the UK we have been spared the high heat (for now, it will probably come later) but we had 70%+ and it’s not nice that high as everything feels damp.