Apple and Google often store your other 99% of passwords and passkeys, so losing this is actually more important than losing the 99%. I take your point but saying 99% have reset services when the critical 1% may never be recoverable without posting to HN is an important point.
For those you add recovery e-mails. You can easily have a Google, Microsoft and Yahoo e-mail so having access to at least one means you can recover the rest. Yes, this increases your attack surface, but the chances remain miniscule.
Just as a note: for E2EE services that use your password to decrypt your key to decrypt your data, a recovery email often recovers your user account BUT not your data (so you may get access to a blank account). It is perfectly possible to lose access to your data, that may include the rest of your passwords, if you have not set up other recovery methods which can actually decrypt your encryption keys, and rely on a recovery email or phone.