You buy a new phone, install the app, and get an uuid with 0 attestation count. Now what? If you try to use that uuid to farm attestations, it'll be easily linked to that uuid. If you try to uninstall/reinstall, the attestation count will count up, eventually making making the newly created uuids immediately suspicious. You might try to create one uuid per month and then try to farm those indefinitely, but they could require you to reattest every month, which should come back with 0-1 attestations, but if you were farming uuids that'll be immediately caught.