In my personal opinion, yes, the designers probably don't care about your use case, or about the product at all.
The designers were probably happy to collect a check and go home.
There is an excellent chance _a_ designer, maybe even _most_ designers, on the project were not happy with just collecting a check.
There is a good chance there was not a single designer who worked on or led the project from its start to its finish.
There is a not-insignificant chance that there were no designers "collecting a check" for the offending design at all.
Try thinking of it this way:The closest living species to humans practices casual rape, murder, and infanticide. There were closer species, but humans likely hunted and raped them to extinction.
With these humble beginnings, it is amazing that most people can walk down the street safely (and that the street was built at all). More than 7 billion humans now live on this planet and for the most part peacefully coexist. Life expectancy and quality of life has never been higher and violence has never been lower. These metrics continue to improve over time.
Viewed from this perspective, issues of crappy UX seem insignificant.
Hope this helps