Thanks for this history, I wasn't aware. It's an interesting point that if this is happening anyways by Apple's fiat, it's in the legacy CAs' interest to even further accelerate the mandatory timeline, so they can pivot to consulting services for their existing customers.
I do still feel that "that blog/publication that had immense cultural impact years ago, that was acquired/put on life support with annual certificate updates, will now be taken offline rather than migrated to a system that can support ACME automations, because the consultants charge more than the ad revenue" will be an unfortunate class of casualty. But that's progress, I suppose.
I think it's more broadly "browsers vs. CAs", I think the balance of power shifted sharply after the Symantec distrusting, and I think very few people on HN would prefer the status quo ante of that power shift if we laid out what it meant.
Today, people are complaining that automation of certificate renewals are annoying (I'm sure they were). Before that, the complaint was that random US companies were simply buying and deploying their own root certificates, issuing certs for arbitrary strangers domains, so their IT teams wouldn't have to update their desktop configurations.
I do still feel that "that blog/publication that had immense cultural impact years ago, that was acquired/put on life support with annual certificate updates, will now be taken offline rather than migrated to a system that can support ACME automations, because the consultants charge more than the ad revenue" will be an unfortunate class of casualty. But that's progress, I suppose.