There's a Spectrum chat for Deno with a growing community of very quiet contributors. I asked a question there recently and haven't had any responses. Maybe I'll ask the question here instead.
There's a very instructive article from Max, the technical co-founder of Spectrum titled Tech Choices I Regret at Spectrum.
With the benefit of hindsight, here are the technology choices I regret and the lessons I have learned.
They're good lessons that the rest of us, me included, should take to heart.