Attestation provides a guarantee that the credential is stored in a system controlled by a specific vendor. It’s not “more” or “less” secure, it’s just what it literally says. It provides guarantees of uniformity, not safe storage of credentials. An implementation from a different vendor is not necessarily flawed! And properties/guarantees don’t live on some universal (or majority-applicable) “good-to-bad” scale, no such thing exists.
This could make sense in a corporate setting, where corporate may have a meaningful reason to want predictability and uniformity. It doesn’t make sense in a free-for-all open world scenario where visitors are diverse.
I guess it’s the same nearsighted attitude that makes companies think they want to stifle competition, even though history has plenty of examples how it leads to net negative effects in the long run despite all the short term benefits. It’s as if ‘00s browser wars haven’t taught people anything (IE won back then - and where is it now?)
