The panel's 4500x3000 mode, 1.5 scale, and 10-bit request were a rule
for connector DP-2 outright, which handed them to whatever monitor a
stranger's machine had on its most common DisplayPort connector. The
rule is now matched by description, the per-output prefs loop covers
every connector including DP-2, and the displays contract pins the
policy to the description rather than the port.