Passkey authentication is way more secure and phishing resistant. Passkey is always 2 factor authentication requiring your unique device and biometric for it to work. Reducing the use of passwords to authenticate will protect you from phishing, keyloggers, and man in the middle attacks.
However, I still keep my passwords in the event that I do lose my device. All my passwords are paired with a 2nd factor authentication when available. I always avoid sms 2nd factor if I can. Google allows for u2f security keys as a second factor which is even more secure than using passkeys since the unique key cannot be duplicated like passkeys can via airdrop.
If you add a security key to your google account and keep your password, you are very secure. If somebody stole your password, hacker won't be able to access your account without the security key. I don't see a need to go 100% passwordless. There is still a fear for of me being locked out of my accounts permanently.