Thanks for sharing this.
Though, what is your request?
I guess it depends on how much you are willing to make own sacrifices in the name of our climate crises?
If you really wanna do you part, only support environment-friendly cloud storage providers and decline request for non-environment-friendly cloud services e.g. for Blackblaze.
Hopefully that will make some reconsider there choice of cloud storage provider. And perhaps even push pressure on other non-environment-friendly providers, when the WinSCP make a stand on this matter ;-)
You are in a unique situation by having created the most impressive, respected and used SFTP tool in the world.