I do think those of us who were long skeptical of Deno are owed a small "I told you so".
Fundamentally, there is a big sect of the JavaScript ecosystem / culture that is hype-driven and has extreme churn. Jumping to every new framework and runtime without thought for the long-term, or any regard for historical patterns.
This stuff keeps happening. Somehow I'd love to get through to the perpetuators of the JS hype treadmill that they're only hurting themselves and making themselves look foolish when the churn inevitably hurts them and the wider ecosystem.
But maybe they jumped to the next shiny thing after Deno before Demo's demise was announced, and they'll learn nothing.
You should read the article; it's well thought out, and it directly addresses your points and what was learned by the ecosystem. That would be a more interesting thing to argue about.