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The War on Passwords Is One Step Closer to Being Over
(www.wired.com)
This is a most excellent place for technology news and articles.
The author of your blog post comes to this conclusion:
The protocol (CXP) which the article is about, would allow you to export the passkeys from the “platform controlled passkey store” and import them into e.g. Bitwarden. So i would imagine the author being in favor of the protocol.