The thing is she may be right for centralized messengers. Any decentralized messenger can scale out without hyperscalers. Currently my top pick is nostr:nprofile1qqsygwfllr9zrmw63el9zz3d3there4hrlecj6dxnv6ky9dlks46cxgpr9mhxue69uhhyetvv9ujumt0d4hhxarj9ecxjmnt9ua3jglt