As it is, Disney's attempts at describing life between Episodes 3 & 4 have proved to be underwhleming.
Star Wars Rebels took place just before Episode 4 and turned into equal parts
Clone Wars family reunion and the emasculation of Thrawn.
We also have the novel
Star Wars: Ahsoka that takes place about a year after Order 66 that implies that what should have been a very rudimentary form of the rebellion is far more organized by Bail Organa than it should be at this point.
Still, a competent writer and crew could probably come up with something you described and do so more plausibly.
Heck, they could have had a random extra covered by a white sheet and had some random medical person say something such as, "We don't know what happened. This was so unexpected." with a response along the lines of, "Leia's knowledge and expertise will be missed at a time where we need it most."
There, we have something better to make it clear Leia is dead and the timing is so less than ideal that an emotional response now seems natural.
And all the pictures and talk about Toilet Man is wow

. That's the kind of character I'd expect from young kids trying to outdo each other in silliness. Are gay male fans even aware, and accepting, of Toilet Man given how he reeks of negative stereotyping and the implication that both he and his gay lover are less than human by virtue of their cybernetic
mutilation enhancements?