Cloudflare's post doesn't mention it, but the Twitter account that claimed credit for the hack (and made all kinds of ridiculous boasts like "we could have owned half the internet") has been suspended.[1] Before that the owner of the account posted plenty of personal information, including selfies.[2] A Mastodon instance is where they're posting stuff now.[3]
It really seems like this person is mentally ill and it's only a matter of time before they get in trouble with law enforcement. I mean, it's standard opsec to avoid posting your mailing address on your l33t h4x0r account.[4] I realize the address is a PO box, but this is practically begging the authorities to intervene.
1. https://twitter.com/nyancrimew
I'm not sure why protestors would take tips from the HK protestors. After all, they were not at all successful.
I attribute this problem to two things:
1) Hong Kongers are culturally mostly British.
2) Modern British culture has no martial tradition whatsoever, and therefore no practical ability to mount a successful resistance to any kind of even moderately-equipped state actor that is willing to use force.
If you're dealing with a polite government that's strictly constrained by voter approval, then the HK strategy might work.