Hi @Cordeos,
Thank you for your valuable feedback. I wasn’t aware that the notification toast was your primary concern, as my focus has been on the mobile app rather than this feature from the title. I tried to reduce some inconvenience by avoiding external API calls, and I’m sorry if this didn’t fully address your needs. Also, now I get that this isn’t an option in the Community Edition.
Passbolt has since released an updated Browser Extension. You can now leave the Passphrase field empty and use the Note field (previously Description) with the same security level, without triggering notifications. For more details, please check: https://community.passbolt.com/t/passbolt-5-ui-redesign/12717#p-30417-new-resource-createedit-dialogs-14. It is on CE as well, this time I checked. 
I know it’s not perfect, so maybe we can loop in @antony to dig into better solutions?