I'm on a Dell XPS now, and formerly a MBP 2015, so I haven't had a physical ethernet port in a really long time. I still miss it— I work at a robotics company, and a lot of my job revolves around the installer workflow (pxe, kexec, that kind of stuff), driver development (lasers, PLCs, and other devices that all speak Profinet and similar ethernet-based protocols), not to mention general fault investigation for when a robot "falls off the network" but can still be accessed over a wired last-ditch rescue interface.
So yes, I have dongles at my desk and there are stashes of them around the office, but it's still a source of frustration when they go missing, don't work, etc. I know I'm a bit of a special case, but I would definitely still appreciate a computer that was 50% thicker with a proper ethernet port.
My wife’s HP laptop has a spring loaded full sized jack that pops out. It adds no thickness and the laptop cost $300, there’s no ethernet jack on the Mac not because they can’t but they don’t want one.
So yes, I have dongles at my desk and there are stashes of them around the office, but it's still a source of frustration when they go missing, don't work, etc. I know I'm a bit of a special case, but I would definitely still appreciate a computer that was 50% thicker with a proper ethernet port.