Some would say the FD is a poor excuse for a chain guide and rather noisy. When I say chain drops, I don't mean the chain coming off completely, I mean dropping onto the smaller ring(s). And that's with brand new rings. I get reading the trail and getting the front and rear shifting to the point where it's instinctive, but I would argue that it's never going to be as smooth, fast and instinctive as having just one shifter to think about. I'm sure lots of XC racers would disagree.
Another thing I forgot to mention is that with a front derailleur you can't run a lever actuated dropper remote on the bars. Does this mean that on the left side of the bars you have brakes, shifter and (badly designed) dropper remote? That's a lot going on, I wouldn't call that smooth and instinctive.
In all fairness, we're probably talking about different disciplines here; 2x and 3x is more suited to XC riding/racing (where most riders probably don't even have a dropper post) and 1x is more suited to trail riding and enduro, where those higher ratios aren't needed as much.