I fucking love passkeys. I hate 2FA on every god damn website, but clearly the majority of people are too lazy/stupid for passwords alone to work in a time when phishing is so widespread. My only problem with them was that I couldn’t use my Bitwarden passkeys in Firefox for Android, but they fixed that, and I’ve never had a bad experience with a passkey since.

Any standalone drawing tablets with screens are likely going to be worse about privacy than Apple. You probably want to look into buying a used laptop with a stylus touchscreen and put Linux on it.