To give a second data point (on Monterey 12.6):
Safari Tech Preview in private mode:
Safari Tech Preview in regular, non-private mode:
Regular Safari 16, private mode:
(and non-private mode in Safari 16 is same as STP - no red text shows)
Therefore I wonder if the red text is linked to (or reliant on) some kind of state persistence or tracking that is not available in private mode on Safari TP, and which Orion has on by default?