Exactly, and I often put mine on 5 minutes before I get to the trail so by the time I’m there I’m almost done airing down.if you want slow continue to use that one, I have the same one and it was terrible, I just borrow one of my buddies ARB deflaters. One guy I know has those ones you screw on and walk away from, might be slower than the ARB but at least you don't have to stay bent over using it. Typically the air down time is used to bullshit and chew the fat anyway so speed is not of the essence.
When do you know when the tire has reached 8psi?
Regarding this deflator, I had a buddy with a leaking core - we used my ARB to replace the core (I guess this is a somewhat hidden feature) as it pulls it out while deflating.I use the ARB one:
It's served me well for years!