Point is, (for the OP) just ride your **** bike..
Wouldn’t hurt for you and Brant to also follow this advice.
Personally I’d rather that those who design frames thought about it as well as rode their bikes (and probably did a lot of thinking before, during and after bike rides).
Trail matters most when riding rough ground at speed – it matters far less when hitting and landing big jumps and matters nought when you’re in the air.
Hand forward offset vs steering axis (stem length minus bar backsweep) gives a self-centreing effect from the rider, so shortening stems reduces that effect counterbalancing the increase in self-centreing from the wheel when you increase the trail.
Riding my BMX I notice how you can have much bigger steering angles whilst still going in a roughly straight line, compared to my MTB. Presumably this is due to the smaller contact patch of the small high pressure tyre allowing much larger scrub angles?