Deno Deploy is actually an excellent product.
My choice ranking is Deno Deploy > Fly.io > AWS for new projects, depending on complexity and needs. They also have a new Deno sandbox feature which is great for running untrusted code, AI agents, etc.
The real question is can they adapt to customer feedback fast enough, focus priorities, adequately market & grow, make it profitable, etc. Bumpy road but definitely not doomed.
I was surprised by the tone about deploy in the blog post too. I think it's excellent. I use it for anything new that uses TypeScript.