Yes, Twitter now considers everything "suspicious", including the minimal steps required to use Twitter as a logged-in account at all, like "following people" (

Yes, Twitter now considers everything "suspicious", including the minimal steps required to use Twitter as a logged-in account at all, like "following people" (even just a few). And thus, Twitter more-or-less requires phone numbers from everyone. This increases the risk that Twitter's users will be "doxxed" – and even, when those users anger certain large violent organizations, the risk they'll be assassinated.