Another reason to keep foundational protocols small. HTTP/2 has been around for more than a decade (including SPDY), and this is a first time this attack type surfaced. I wonder what surprises HTTP/3 and QUIC hide...
If the one doing the blocking is not at FAANG it would do nothing of sorts. And FAANG benefit from DDoS by getting people into their walled cloud gardens.
That's because many corporate "donations" are not so much a donation as a way of soft-buying a feature.
It's hard for businesses hyperfocused on short-term gains to understand a long-term value of, for example, supporting an alternative for an industry-dominating Adobe toolkit. But the value is there.
You don't have control because browser might not support of http3 at all. It's up to browser developers to decide when their support levels are mature enough to use by default. There's no other way of doing it.
I can't agree with author about it eating the world though. It seems like only internet giants can afford implementing and supporting protocol this complex, and they're the only ones who will get a measurable benefit from it. It is an upgrade for sure, but an expensive one.
DNS was created for a different environment, at a time when security wasn't at forefront so it's not a good example of the opposite.