In a perfect world, yeah totally. I could use controllers that are approximately twice the price (nice!nanos) and have to rewrite the firmware (qmk -> zmk) and deal with Bluetooth, or I could just use wires and have it "just work™". I personally prefer this, but tons of people go the wireless route.
I have a larger build and nailing down the ergonomics is really hard without a split board.
I could use a unibody split but this is just easier to adjust and travel with this way.
I could also use either half independently. (with a quick firmware change on the right, but still)
I use one for volume and one for scrolling right now.
It's not done yet, but I figured I'd show off a little bit since I have been using this for a few weeks now. This is the "swirl". It's heavily inspired by the helix with some notable changes:
Hey guys, not sure if we do PCB reviews in this group, but I figured I'd give it a shot since I know it was a thing that happened over in the bad website.
It's essentially a 5x6+1+encoder board. Images below and open source hardware repo is linked.
kicad render for the juicy thumbnail
Front
Back
This is baby's first PCB design, so feel free to tear me a new one in the comments so I can make good boards.
I had a similar set of typing habits when I started and found that the bfo9000 suited my needs, may be worth a try for you.
It is ortholinear, rather that the row staggered layout you requested, but does allow the "overreaching" typing style.
https://keeb.io/products/bfo-9000-keyboard-customizable-full-size-split-ortholinear