I'm shooting RAW+JPEG on SD UHS-II cards. This turned out sufficiently fast since I have my D500 (5 years). The buffer of the D500 is incredibly good (or SD UHS-II cards are incredibly fast) for photo use, including bursts.
My MacBook 13 Pro late 2013 takes SD cards and any photo processing is sufficiently fast, driving a 4K monitor. New MacBooks got an SD slot back and are just better for sure.
Why bother with limitations caused by readers?
Why leave a card slot empty on the D500? You'd be wasting one of the camera's important features for backup or overflow.
What limitations do card readers cause?
Lacking a card reader, at least for now, the OP appears to struggle. SnapBridge isn't the best feature of the D500. Newer cameras have increasingly good USB-C connectors for simple connectivity to smartphones and tablets, besides more -- and high-res HDMI for a direct monitor/TV connection. Here the D500 is showing its age.
I just wanted to point out how simple live can be with SD cards that plug into many devices without need for an adapter.
I'm only having one QXD card that I use as backup sometimes. Having no XQD card reader either.