Ad blocking
Years ago, when I actually bought physical paper magazines, I remember the routine of shaking a magazine in the newsagent, before buying it, to get rid of all of the advertising inserts. Pretty sure some newsagents provided a bin for that purpose. I suppose that was primitive, physical, ad blocking.
Now I can’t come to terms with buying something that will be disposed of when I’ve finished reading it. It is mad that we create so much printed material that will meet the recycling bin.
Now I can’t come to terms with buying something that will be disposed of when I’ve finished reading it. It is mad that we create so much printed material that will meet the recycling bin.

no subject
Since I haven't read a newspaper in well over 35 years, I don't really have the problem of buying something that will be disposed of when I've read it.
Teddy
no subject
The odd newspaper gets saved for masking craft projects (overspraying paint, cushioning glass for cutting, etc.). Try doing that with an iPad!
I am occasionally guilty of impulse-purchasing magazines in airports. I try to remember leave those on the plane for the next person to read and/or wonder about, although I don't know how often they just get thrown out by the cleaning crew. (This is a valuable service. I once ended up on a transatlantic flight with nothing to read but someone's leftover Stern (German popular culture) magazine, having read the airline's in-flight offering on the way out.)
To summarize:
1. I am not yet ready to let go of all my ephemera; and
2. Sometimes even a Yoko Ono interview in German will keep one sane.
no subject
I suspect this is more of a Tokyo/metropolitan issues than a Japan issue, but never having lived anywhere else in Japan I can't cmpare directly.