I don't disagree with you. My counter-argument has been cloud is a platform. There's an interpretation of the phrase "cloud agnostic" that essentially means you're agnostic to the OS, middleware, and application servers. We've never been so agnostic before, what makes us think we can be now?

That's why I'm thinking "cloud agnostic" has to mean something different. I don't see there being a problem with needing to re-work an application a little bit in order to deploy it to another cloud platform. The question is what kind of work would a reasonable person expect "re-work" to entail?