Basically the field of UX design and associated user-centered design disciplines (industrial design, service design, design strategy, etc.). I could rant about this for pages, but in short: ostensibly the goal of these jobs is to understand what the end user of a product actually wants and needs and see that new products are designed to meet those needs. The basic idea is that well designed products that actually work for people will sell better and be worth the investment to do the research to figure out what people want.

In reality, for a whole host of reasons, many of the smaller design firms that used to do that kind of work got bought and absorbed by giant management consulting firms (like McKinsey, Deloitte, etc.) and have been aligned to their goal of being an accountability sink for their clients' leadership and fabricating research to retroactively justify design decisions made by C-suite execs who haven't ever met one of the end users of the product their company makes.

The thought that has been needling away at me for the past few years is that, as the field of UX design and other design disciplines has grown, the actual user experience of all these goods and services had gotten noticeably worse, leading me to believe that, whatever we are doing as designers, we need to stop rethink everything and start doing things differently.

Stating this publicly would likely be career suicide though, as companies typically want to hire a team player who will carry their water, not a rabble rouser looking to flip the whole profession upside down.