What you're talking about is an effort by people to be more inclusive by communicating things about themselves that they want others to be aware of. I can understand how this can be awkward and annoying, but it also has positive effects of bringing out these kinds of unstated assumptions like the idea of a work ethic.

If you look at history, groups tended to be more cohesive and share cultural values. This made it easy for most people to relate to each other because they could rely on certain unstated agreements. Now that we have more of an interconnected world, it's important to figure out how we can live together despite different understandings and identities. Not everyone is on board with this kind of diversity, but it's hard to see how we can move forward without finding some way to connect to people who aren't like us, and so far one of the solutions put forward is to over-communicate.