"Distant stare"? Rusty isn't even looking at the camera.
Randy's trails and demons are well documented. However, the reports are his wife apparently manipulated him and kept him drunk all the time, requiring a conservatorship.
That isn't normal for any drug addict. Likely, there are effects from long ago. Maybe he suffers from other age related issues. We all do at some point.
But, I'm betting he is much better now that his wife is gone. Sorry. That isn't a "distant stare". That looks like an old guy who has been through hell, but is looking pretty content and lucid.
I'm glad Rusty had a good visit.