Article discussing the push for passkeys as an alternative to passwords, including numerous problems associated with passkeys like big companies agenda, complicated proprietary implementations, vendor lock-in requirements and dependency on smartphones, dubious value for ordinary users, and misplaced purpose and value, hype and security, lax IT practices and constant private data leaks, psychological reasons why modern Web and email are interactive and phishing-prone due to profit-driven design, wrongness of clickable links, practice of information-only communication, severe implications for privacy and freedom in so-called modern solutions, some other observations, and more
https://keepassxc.org/blog/2024-03-10-2.7.7-released/ says it has passkey support. I guess the author can now do exactly what they want.
You seem to be falling for what the author was writing about. Only because you could technically try to use keepassxc to store passkeys, that does not mean that it will work. You see passkeys were build in a way the service you’re trying to login to can decide if they accept your keepassxc for passkey storage or not. It looks like you are in control when you are actually not.
So, same as passwords then. The service can determine what they accept as a password. And if they’re being assholes about it you can decide to go elsewhere.