I would actually be fine with this, because the only time I will be using the transfer function is when the monitors are not side-by-side, i.e. most of the time in my setup. 1 monitor is at 0.5m from my eyes and the other one is at ~1m, so I don’t feel anything being off.
But there is another way.
Set an anchor point somewhere on the touching edges of the monitors and calculate distance from there instead.
This seems to align with Suggestion Cursor Teleport on Multi-Monitor Setups - #22 by Marata