I can explain this. About 15 years ago or so, together with a friend, we started a company whose goal was to offer a working product search for E-commerce. Faceting was just one aspect of the problem, a much more pressing issue for non-English speaking countries is that you need a way to deal with declension and various misspellings (especially from people that do not enter accented characters). So we did. Solve the…
While I've never been as deep in the details, my perpetual answer here is:
"You're so vain, I bet you think this search is about you?"
I understand it because people are human, but I can't help but feel annoyance when people are like "the search engine isn't doing what I want!"
It's not designed to DO THAT, it's designed to maximize it's own sales and we're pretty much at the point where we should try to stop pretending otherwise.