This seems to be a good place to repeat, to meta.Music, the concerns I posted to Chat room Musical Practice and Performance about heavy-handed use of the "no shopping recs" site scope rule. They are raised by my question How can I rehearse and perform with PDF scores on screen instead of paper scores?.
Right now the rule on music.SE appears to be that shopping recommendation questions are out of scope, and are summarily closed. I think that's a mistake. I believe that there are good questions which will elicit good answers, even though some may interpret them as "shopping recs". This meta.Music question presumes that some kind of "shopping guidance" questions, if not "shopping rec", will be allowed in-scope. I support that.
But, in Music.SE, technology doesn't change so fast, even shopping recs may be valid for long enough to be useful.
A further frustration: the "Let's Go Shopping" blog does admit a "what do I need to learn to do X" question is appropriate. I duly transform my initial Shopping Rec question into a "How do I do X" question, and it still triggers the Shopping Rec antibodies. So, maybe the antibodies are too active, and are smothering possible good questions along with bad?