Well, yes it's always possible that Cloudflare will comply with a demand to block Twitter. GP specifically raised the possibility of null-routing and I'm just pointing out it's probably not a good idea.
Roskomnadzor's 2018 escapade with Telegram under a rather similar situation - their attempts to block it ended up taking out vast sections of the internet (for Russians) that didn't have anything to do with Telegram.
Tying your service to vital internet infrastructure can work. It doesn't even have to be a particularly ironclad solution. In 2018, the powers that be in Russia decided it's cheaper to flood Telegram with their own propaganda, rather than block it.
> Null-routing Cloudflare is also going to do a fair bit of collateral damage to the people of the 7th most populous state on Earth though.
I wish... That sort of massive economic damage is exactly what this country deserves. It's gotten to the point I'm hoping Trump wins and sanctions this place for stealing millions from american companies via arbitrary fines.
Considering the initial order of the Brazilian judiciary regarding VPN, this is almost certainly what Twitter hopes to achieve here.