The way I ride a 2x (40+ years experience, just so we don't have to question "ability" to shift a FD) is to use the small ring for only about the first 3 or 4 lowest gears and then go on the big ring for everything higher. I might stay on the small ring up to mid-cassette if I know it's going to get steeper again, but that's about it. I tend to stay on the big ring down to the second lowest gear, so I do use a lot more of the overlap there. So those near "duplicate" gears have a practical use, but they don't give you any more actual ratios vs a 1x setup. This is what tomato is getting at.

The way I ride 1x (on all my mtbs for the last 6 years) is by moving up and down the cassette as needed, LOL

The problem I have with 2x is that my local roads are full of steep dips and rises which require a s*** load of FD changes. It's the worst scenario for a multi-chainring setup and a constant reminder of why 2x was consigned to history in the mtb world.

1x13 pretty much solves this issue for me, at a very small cost in the number of useful ratios. I effectively give up maybe 2 ratios at most for the same overall range. Ekar cleverly gives up those ratios at the very low end of the cassette, where it doesn't matter much anyway. The larger gaps there feel more natural anyway, as they do on a mtb setup. Ekar actually has much closer ratios at the higher end of the cassette than a compact, wide range 2x11