Have I Been Pwned adds 71 million emails from Naz.API stolen account list
(www.bleepingcomputer.com)
I agree with doing this, but the main drawback is that you can't easily check all of your unique aliases in HaveIBeenPwned without scripting something and paying for API access.
I have hundreds of unique aliases for my accounts, but no simple way to see when/if the services that use them are breached.