I used to love to get my new issues of "Fly Fisherman" and "Fly Tier", but haven't renewed either subscription in years.
I think they have tried to broaden their subscription base by becoming all things to all people and have lost their way in the process.
Of course, this is happening to all print media. They are trying to survive in the era of YouTube, digital magazines (often free) as well as a plethora of ebooks (cheap, or even free).

If your interest is stream fishing for trout, you can find lots of material on that subject without leafing through pond fishing, lake fishing, or saltwater fishing.