The most useful observation is that the debate was not ultimately about the use of the word “ago” but the incorrect positioning of the timestamp which made the timestamp unnecessarily ambiguous. E.g. the problem was a bit higher level and deeper than the proposed fix.
Definitely agree the new positioning of the timestamp is better – and as you pointed out, titles go where the timestamp used to be, which makes a lot more sense as a title is strongly associated with the user, and the timestamp is strongly associated with the post. So the discussion had a good, positive outcome.
(And we still don’t repeat “ago” on every post, for which I am very happy. I really dislike repeated text unless it is utterly essential.)