Pretty much. Modern mixed-use developments are basically born again shopping malls. We don't have the density for "real" mixed use, so it's just a development project like any other; I'm sure there are real, integrated, mixed-use projects, but the ones I see in small urban/suburban areas are detached from the surrounding area and often detached from public transport, basically to sell overpriced apartments to lifestyle-minded HENRYs.
Is that really a problem though? I'm imagining a mixed-use development surrounded by many blocks of single family homes and a large parking garage nearby, like a mall, that makes it easy for homeowners to access the development. (I think this is what you mean by born again shopping mall)
I live nearby one such development, and it's awesome (when there isn't a pandemic). There's a great variety of retail because they can rely on both local residents and homeowners who drive in, and it's thriving (when there isn't a pandemic).
More apartments have been built up around the development as it's grown, and while it's very detached from the urban center there is a bus route that connects it and the other apartments throughout the suburb to the light rail system.
Mixed use neighborhoods of the past generally offer business diversity and lots of mom-and-pops.
A lot of the new mixed use developments where I live in Seattle are basically malls in how sterile and unvaried the commercial bits are. (New American upscale brunch restaurant? Check. Fad group fitness club? Check. Bank and starbucks? Check.)
