hell, didn't add the little I've heard about redshift stems--a bikepacking podcast I listen to has mentioned them. The guy loves his, but he is doing a lot of super long distance bikepacking routes on all kinds of terrain--so yes, they seem to be a very effective doohickey--but I'd be very wary of getting something until you are pretty sure of your bike setup, ie stem length.
The only way to know that is to live with a bike for a while, and I'm pretty certain its you who hasnt ridden a dropbar bike since the 70s right? So a certain amount of adjusting period to begin with, plus you like said, you're an old dude like most of us here, so another factor to want to be sure of your stem length etc before plonking down 200+ bucks for a stem of a fixed length and angle...... (I'm canadian, so the price is way higher here)