I'll give here an anecdote as a counter-example. Sorry for the not-really-meaningful-in-general reply.
My wife couldn't care less about prosumer features per se, or which body I have, but: once I bought my first FF body (D800! I loved that camera) with a fast prime (f/1.8), any attempt over the years to downsize (even for travel kit) - whether back to APS-C, or to m4/3 - was met with "did you take the small camera again?" based on the _look_ of the pictures. Yes, even with fast DX or m4/3 lenses. There is something about shooting at f/1.8 or f/2.8 on FF that changes the look of the pictures (I don't think it's bokeh per se, but could be?).
While I'm not _that_ particular to the FF look, the shadow/highlights recovery of full-frame compared my APS-C makes me annoyed whenever I have to process pictures taken with smaller sensors. So much so that I sold (for the Nth time) my travel kit - a Z50 - and I'm resigned now that my travel kit will have to be FF; either my current Z6 II with the recent pancake primes if I want to go really small, or with the f/4 zooms (I'm not particular to long telephoto while travelling). Maybe a Z5 II will be good enough.
So there is at least some small subset of people that even for travel prefer FF. Whether the size of that is 1 person (me) or more, that I don't know.