I guess that is a matter of time that the reality changes, we will not duplicate the number of developers indefinitely and experience and good practices will accumulate.
Taking into account the circumstances, we are not doing so badly.
You probably mean "double" here, but the bottom line is that there is zero data to back up that claim.
He literally made up that number out of thin air to make his talk look more important.
How does that change his original argument?
Part of the problem is a learning process, and indeed, I think the Javascript world should have learned some lessons - a lot of the mess was predictable, and predicted. Maybe next time.
But part of the problem is that we pick winners through competition. If we had a functional magic 8-ball, we'd know which [ecosystem/language/distro/OS/anything else] to back and save all the time, money and effort wasted on marketplace sorting. But unless you prefer a command economy, this is how something wins. "We" "picked" Linux this way, and it took a while.
Same with Covid, is roughly 20 years ago and people forgot there was SARS.
EDIT: also, Node's more than a decade old at this point, so it is at least a little bit surprising that the ecosystem is still experiencing these sorts of issues.
I've been stuck using it for about 4 years and it makes me literally hate computers and programming. Everything is so outrageously bad and wrapped in smarmy self congratulating bullshit. It's just so staggeringly terrible...
So these kind of catastrophes every few months for bullshit reasons seem kind of obvious and expected, doesn't it?