Dear @Imdew, Thanks for the comment about Subaru brand axles. I will definitely ask them if they used those.
Dear @laegion, I will certainly try and see if there is any shaking/swaying of the steering wheel at low speeds. I hope I can ask the (100% Subaru) mechanic to "prove" the part is the issue; so far, they are indicating the parts are indeed bad, and I'm not sure with the age and mileage of the car if one could find all kinds of parts that are bad?? Also extremely dry climate may have whatever impacts, it certainly dries out rubber fast (like windshield wipers).
I did make a phone call to the dealer and (over the phone only, mind you) they suggested it was the control-arm bushings or compliance bushings. Unfortunately, between the Subaru dealer and the Subaru mechanic, the mechanic has been more reliable over the last 20 years...dealer notorious for overcharging, misdiagnosing, etc.
Thank you for the list of other possibilities! I hope they can find out what's wrong. I planned to keep the car to at least 300k mi. Do they even make velour seats anymore?