Correct. You do not need more stuff. The artbook is for those that just can't let go yet. Probably the even better solution is some kind of bandcamp-like digital platform where the liner notes/lyrics come in an interactive format to accompany a download.
I still have a hard time letting go of accumulated baggage, but am quite conscious of trying not to add to the pile. I triple sense check every purchase. If you are buying something as a replacement, make sure you get rid of the original.
Is that referring to the subscribers or the artists? Of course, subscribers are getting a great service. They are getting access to a vast collection of music, on demand, for next to nothing while actively participating in the devaluation of an artform.
A subscription is a flat fee which is where the core problem lies. It's impossible to fairly compensate everyone from a flat fee. The model was broken before it even started, except for the services themselves that are just banking on the fact that an artist might feel it is missing out by not having content on there. They fell for the deception that "you will reach an enormous audience". Yes, an enormous audience of dickholes that expect to get everything for free. "More people will come to your gigs!" What if you don't want to tour or it is not possible to do so (hello Mr pandemic).