I guess a similar comparison is with the manual v automatic transmission in cars.

We all can all "feel" when a gear needs to be changed in a "manual" car. Or most of us at least.
For the others, then an automatic gearbox does the work.

So, I guess, now all mowers have some form of governing.

Or do they ?
Are any mowers still "user" operated ?
Can you take the wind vane governing off somehow (easily) ?