The title is a play on the TNG episode “The Inner Light”
But why? I don't see a storyline connection/similarly between this episode and "The Inner Light".
I think the episode is just about Mariner's inner fight about being in Starfleet, and the similarity in title is just coincidental.
I honestly think that Lower Decks has the potential to be the longest running Star Trek show.
I assume they are cheaper to produce than the live action shows so less risk for the executives but still decent return on investment.