Melanie, forgive me - I did not intend to suggest that you do it, merely pointing out the hypocrisy of anyone complaining about it being done.
If the system stopped doing that, it's great news, however "back then" it did a pretty terrible thing. If you added a sibling to a parentless profile, it created a father with first name Unknown. If the sibling had the same LNAB as the original profile then it gave the father that LNAB, otherwise it assigned Unknown as the father's LNAB also. Other than the connections to the two children, the father's profile was completely blank ... and I *do* mean completely - it didn't even have the Biography and Sources headings! Finally, rubbing salt in the wound, the person who created the sibling was given credit for having created the father's profile, made manager of it, but never informed that this had happened. It took a line in your feed showing that a data doctor had added Biography and Source headings and the <references /> line for you to discover this profile that was a very big embarrassment to have been accorded responsibility for.
If the only change is to require a date, that isn't much of an improvement the way we're encouraged to estimate birth as "before" 20 (or whatever) years earlier than birth of earliest known child.