Every guide, comparison and detector run we have published under account-management.
A passkey is bound to an authenticator, not to a password store. Profiles without one cannot enrol, cannot re-authenticate, and get locked out of accounts they created. Why this breaks account warming, and what a per-profile virtual authenticator changes.
The most common complaint in this category is that people set up a fingerprint browser and residential proxies and got banned anyway. Usually the tooling was fine. Here is what the tooling never covered, ranked by how often it is the real cause.