This is not any disaster. This is the disaster after 99.
Plus, please do not assume that people are only trying to use Twitter. They post addresses of loved ones to anywhere they can find: Twitter, Instagram, FB, Tiktok, local social media etc. and surely Whatsapp before all these.
However, the very nature of posting openly in social platforms are different than platforms which are predominantly used for private communication. People cannot think of building massive groups through Whatsapp. Plus, there's a barrier to reach hub people.