If they were to have a seriously catastrophic incident, it's conceivable that they might not have anyone left who knows how to get things back online. It's not inconceivable that they could eventually figure it out, but without that essential knowledge, who knows how long that could take? I imagine it would be pretty bad for Twitter's future if the site were unavailable for days or weeks on end.
Twitter is a quite complex distributed system, as good as geohot is he's just a guy, with one brain, capable of holding a limited amount of information and context at a time. There's no way that one guy, no matter how good, can actually completely reason about all aspects of a complex system.
Even less in 12 weeks, that's actually absurdly preposterous.
SpaceX Dragon: https://twitter.com/ashleevance/status/1593133313484787713
Optimism: https://twitter.com/jinglejamOP/status/1310718738417811459