Trackpad gestures are great too, I use my Magic Trackpad 2 on my Linux desktop where I don't have any touchscreens. Still though, I think the display as a multitouch surface shouldn't be overlooked. It's pretty much perfect for gesturing.
The best part is that those trackpad gestures translate almost 1:1 from macOS to iPadOS. And you can use magic trackpad with iPad too (although it makes more sense for me personally to use the trackpad built into the iPad magic keyboard case). I havent really used iPad shortcuts before all that much, but once i accidentally triggered a few of them after using it with a trackpad due to the muscle memory from macOS, it all clicked perfectly.
The issue with the Touch Bar is the same, that's not a professional feature, or even particular useful. Apple knows this, because you can't buy a magic keyboard with the Touch Bar. If it was useful, the Touch Bar would also appear on the those and it doesn't. I'd love to know how many MacBook Pros are sold with and without the Touch Bar.