You can have some seriously in-depth discussions in sociology or philosophy as well, that would be hard to follow for someone with just a STEM background. The kind of sociology or philosophy one would discuss without preparation or reading with friends is not really comparable with the academic disciplines. It is just armchair philosophy/sociology.

I have a feeling many technically minded people would struggle to read and write an essay about Heidegger or Habermas. In fact, I doubt most people are even aware of that type of philosophy due to not having actually delved into it very deeply, and yet as outsiders to such fields they feel confident in making claims that those fields are "easier." (And usually there is also an implication that this being "easier" is an indication of those fields being less serious or worthwhile.)