Jokes aside, I would view this more as a Thomas Riker situation - Voyager was split in two in that moment. Both Kims were the same Kim before the divergence field, so both Kims have the same record before then.
In truth, probably part of Kim being stuck at one rank was probably because of a lack of transfers from Voyager, for obvious reasons - it's practically raining promotions on the Cerritos for instance, and transfer seems relatively frequent in Lower Decks.
Rest in peace.
You have brought even more dishonor to your house, Paramount, by canceling it.
Although Prodigy got the equivalent of 4 seasons of Lower Decks.
Honestly, I feel like it showed the value of longer seasons - I felt like we had plenty of time to both develop the plot and get episodic.
While those executive geezers don’t give a darn about animation, seeing Prodigy and Lower Decks makes me really think a 50 minute episode TNG/DS9/VOY format animated series with 15-20 episodes a season could be genius, especially if it looked something like Arcane and was somewhat realistic in some aspects but with stylizations to avoid uncanny valley. You could get more time for character development with less labor concerns than an actual shoot, create more interesting aliens while spending less on VFX, and emulate a classic aesthetic without it looking ridiculous.