This announcement is interesting.
forums.freebsd.org
IMHO it all seems most sensible.
But when I try to change (obfuscate) my date of birth, I'm greeted by this message.
"Once your birthday has been entered, it cannot be changed. Please contact an administrator if it is incorrect."
Is this process working entirely as intended ?

Change in sign-up data / GDPR
For a long time, we have requested Date of Birth and Location when creating a new account. We did this exclusively as an additional anti-spam measure: the more you frustrate an automatic spam account creating process (as used by many spam organizations) by requesting 'unexpected mandatory data'...
But when I try to change (obfuscate) my date of birth, I'm greeted by this message.
"Once your birthday has been entered, it cannot be changed. Please contact an administrator if it is incorrect."
Is this process working entirely as intended ?