Thanks GPT-4 but it isn't (as?) funny if you have to explain it:

A punny phrase that plays on "ontogeny recapitulates phylogeny" and relates to modern deep learning could be:

"Optimogeny recapitulates epochny"

This phrase humorously combines the concept of optimization in deep learning (optimogeny) with the idea of training epochs (epochny), capturing the notion that the optimization process in training neural networks might, in a sense, recapitulate their "evolutionary" development.