I have a theory on this; Dan and Justin are getting to the point where they want to be done with Rick and Morty soon to move on to other things. So, they're ending for Morty would be to end up with Jessica (I guess, kinda boring tho) but they wrote her as a one dimensional popular girl, so they really do much with her since they shot themselves in the foot in terms of her character.
So instead of owning up and saying,>Hey we fucked up writing Jessica, and are going to be giving her a bigger role, which leads to retooling her character
They decided to go for a PR move and say,>We, as #WOKEALLIES, have realized the error of our ways, and are changing this DEEPLY PROBLEMATIC character in order to right the wrongs of society.
From my view it just seems like they're just regretting making Jessica into a one-dimensional archetype of a character now that they've decided they want to actually use her, I guess.