There is no real debate about whether climate change is real nor whether or not it is a major threat, but there is still debate on policy-relevant points. I'm not a climate scientist myself, but I do work with a bunch of them and from what I gather from talking to them there is still a lot of work and debate over consequences, remediation, and urgency. The latter mostly ranging from "extremely urgent but we still have time to avoid the most severe consequences" to "it's too late to prevent widespread disasters and we need to try to minimize the worst."
Right, there is plenty of confidence that climate change is real and caused by humans, but pretty much zero confidence in the long term effects of climate change on human population.
When a 3rd party has access to your keys, their responsibilities to you are spelled out in your contract with them. That's true for CDNs as well as hosting companies.
For most websites today if someone can intercept traffic somewhere close to the server they don't even need the keys, they can just fake responses to pass CA validation and issue valid certificates with their own keys and MITM like there is no encryption.
And coldboot attacks performed by a hosting provider staff of dumping memory and finding keys isn't that realistic of a threat, just like putting servers into a locked cage on someone else's property isn't much of a protection.