Seriously? The next point is “love your juniors” so what you are saying shouldn’t happen. But then again... I think loving your juniors usually ends up with HR.
diligo: love, distinguish by choosing, regard above others, esteem highly, value, prize. Romantic love is 'amo' in latin (and Italian), St. Benedict is not telling you to get into problems with HR when loving anyone.
Iuniores means just what it says, 'the younger' so 'iuniores diligere' does mean 'love the younger' and as such fits perfectly in whatever 'age silo' doctrine you want Americans to accuse of professing. There is no mention of gender at all, nor do Pence or sex jokes come into play here.
I respect my boss, because she's my senior, she is a good leader and a competent dev in her own right. But I don't love her.
Not serious, of course, if any 'CoC' is needed I'd say "just behave" or "do not do unto others what you wouldn't have done upon yourself" should suffice. Rule #9 in the Rule of St. Benedict already states something similar, now just get rid of the rest and you're done.