So they don't want to buy Deno, they want to buy the team to work on something cloudflare specific.

I'd say it's durable object specific. Both team deno and cloudflare (and many others) have been won over by the paradigm. Cloudflare is just the primary implementers of it as a strong example of an actor-based programming model at infra layer, but others have been trying to push it (Rivet, and TerseAI's durable actors, celld)

EDIT: like the whole enthusiasm is that they are buying them because they are generalizing a thing to be NOT a cloudflare thing