I have filled many tires with air over my life and only found out recently that you don't fill them to the pressure listed on the tire, you look for a sticker on the driver door that tells you the pressure required for the tires. The front may be different from the back. Blew my mind and I felt like all my knowledge was questionable.
Yep - like an AWD version of a car may use different pressures than a FWD version, to manage traction.
I've seen an AWD version use lower pressures in the rear than FWD - this helps keep the rear of that car from sliding due to a combination of torque transferring to the rear wheels and more weight back there.
I do care about tire wear but where I live the daily temperature regularly fluctuates by 25+ degrees which means the alert goes off almost all of the time because at least one tire is a degree different or too low at least a couple times a day. I’d have to fill my tires daily to avoid it to be honest. That seems a bit excessive to me.