Backup solutions have to be developed for twitter. Write your business social media manager. Write your university IT, write your city council, spin up your own Mastodon instance. We have a short window to transition to something else while Twitter is still functional. If you wait until it collapses, it’ll be too late.
Make every organization you are in regular contact with aware that their social media posts are on a platform that puts their communications in the same feed as extremists and scam advertisements, that they will not moderate their platform, that they show a contempt for accountability and journalism, and that they need to develop some alternatives before things go to shit, or they risk losing their audience and will have to start totally from scratch.
Start now and you have an exit strategy. Wait for the collapse and it’s going to suck much more.