I've probably experienced more crushing disappointment and unexpected elation with Fenders, USA or otherwise, than with other basses. I've also probably owned more Fenders than any other brand I suppose, so maybe it's just a larger sample size than something to do with Fenders.
I had an American Pro Jazz that played great, but seemed to be lifeless in the way you describe. Reallyyyy low output which I think is a thing with some of those. If I was playing a different style of music I might have loved it but it was massively disappointing given what I paid and my assumptions about what I'd be getting. I'm feeling @MrBKerth though...that may have been as much a function of my impatience and particular needs at that moment, as opposed to any fault with the bass. Given some time I may have grown to love it, it felt absolutely great as I recall. I flipped it quick
I've also been hugely surprised in the other direction. I've had MIM Fenders that were incredible. One of the basses I held onto the longest was a Highway 1 Jazz with a Geddy-esque neck that I bought locally years back. Sold it when my twins were born

. A few months back a 60s Roadworn Jazz popped up locally for $400. I said what the hell and ended up with a fantastic instrument...my expectations were wildly exceeded...across the board, it's fantastic. The tone...
So anyway ya, maybe it's a function of expectations. I've had more disappointment with higher end Fenders, and more stunning surprises with the lower end ones, than I've had wih other brands. YMMV.