The comparison is somewhat awkward, because the rails example presumably produces a date, while the python one is referring to an interval of time.
Just from the meme it's not obvious which was the actual intended use, so labeling either as inaccurate requires us to make assumptions.

Personally, the concept of "10 years ago" is a bit nebulous to me. If today is February 29th, is ten years ago March 1st? Doesn't seem right. Or particularly useful.

[–] nilloc@discuss.tchncs.de 1 points 5 hours ago

Ruby should add 10.years.ago.today

[–] eager_eagle@lemmy.world 4 points 1 day ago

yeah, that's pretty much why timedelta doesn't have the concept of months or years, just days and smaller units. I like it better this way.