For the same issues detailed in MBS-13146, reCAPTCHA must be removed from the MetaBrainz.Org website as it is still present in a couple of signup forms:
If a captcha is still needed, it can be replaced with MTCaptcha, to follow the same migration path as MBS-10039.
MBS-13146 Registration form may not conform to the GDPR
MBS-10039 Replace reCAPTCHA with MTCaptcha