On 06/20/2018 10:16 AM, Michał Górny wrote:
> However, I'm not aware of any good
> justification for collecting this kind of personal information.

Immediately I can think of two good reasons for this information, (i) as
a disambiguifier for matching names, at least across europe it is common
to refer to an individual "A born DD.MM.YYYY", (ii) verify legal age for
entering into agreements. One can argue that without further
verification of (ii) it has less value, but at least that would be a
misrepresentation so shifting the question a bit if it ever becomes an
issue with FLA/DCO etc.

-- 
Kristian Fiskerstrand
OpenPGP keyblock reachable at hkp://pool.sks-keyservers.net
fpr:94CB AFDD 3034 5109 5618 35AA 0B7F 8B60 E3ED FAE3