There was a lot to mock in this episode and not all that much time to mock it.

The fundamental flaw of the episode was, like the Pisces before it, trying to find a way to insert pre-catastrophe people into the storyline.  To do so requires a certain convoluted story contrivance.  The first time they used cryogenic suspension, which was plausible, then the effects of time dilation, also plausible, but not very and now they've used extreme youth serum and a plot hole you could have flown the Ark through to justify its use.

For dramatic purposes, the production crew obviously decided they needed "voices from pre-catastophe" but that runs completely contrary to the basic premise of the show:  That everyone is gone and the knowledge has been lost.