I'm not sure if it's a result of the fact that most people are tech savvy
Most people aren't tech savvy. Again, maybe you are extrapolating inappropriately from your personal experiences, the people you hang out with, etc?
Older generations definitely struggle using software though, so I think they may be a good metric for how simple and easy to use software can be.
Anecdotal experiences could certainly play a role in my opinion here, but I do think I've recognized a pattern over the past couple of decades where winning software interfaces have made a transition from being overly designed and complex to much simpler designs with (usually) predictable interactive element positions and flows.
Think of what software was like when there were "shiny" buttons and small text everywhere with confusing visual flow, and then think about what it is now, usually composed of flat buttons (e.g., the "material-ui" standard) and easy to digest visual flow with predictable interactions. This transition is likely a natural result of figuring out over time what works best and what doesn't.
By tech savvy people, I mean the end users who interact with software on a regular basis. These people (i.e., most people in the modern world, a number steadily increasing) will naturally gravitate towards the easy-to-use, predictable design patterns to which they've become accustomed.
On a related note, I absolutely hate how most mobile and many web and desktop-based apps nowadays don’t have tooltips, so I can’t figure out what some inscrutable icon/button is supposed to do by hovering my mouse on it or long pressing my finger on it. This used to be table stakes.