It's pretty straightforward. Firstly, the phrase is a generalized observation that has many evidentiary instances (from movies, to tv shows, to comics, and more) over the past few years. Secondly, the DT has a very strong downwards trend, movie-on-movie. Thirdly, Disney has yet to break even on the LF/Star Wars purchase of >$4B. It's not to say that these movies made no money. But they are making way less than they "should" - or at least less than Disney execs would have anticipated. Pre-KK, Star Wars was an infinite money printer. With KK, it has been rapidly turning into a liability (especially if you start considering the wider revenue base that has totally tanked, including SW-branded merch and theme parks).
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They are only making less comparatively because budgets have skyrocketed; the rate of return on box office is still within 1% point of the prequel trilogy.
The more likely scenario for why they aren't "infinite money printers" has to do more with competitive films and pure oversaturation of these brands than it does with costumers skipping these films because of the percieved "wokeness".
‘Star Wars’ Box Office: Disney’s Sequels Were Almost As Profitable As George Lucas’ Prequels Trilogy