I did warn you it was a numpty Q. The ponderings sprouted from previous chat on here about using a double rather than a triple-ring setup, claiming you can still get a good useable spread of gears.
I have always been in the habit of always using the middle front ring unless I’m already in the biggest/smallest cog at the back and want another jump. Once past that need, the first gear change is going back to the middle ring. (That may be a weird habit, but it’s been habit for a long time.)
With a double ring, I can imagine myself forever feeling the want to flip the front shifter much more than I do at the moment, halving the cogs at the back between the two rings. That just didn’t sound a similar range of gears, nor a step towards simpler running, to me.