Back in the day is a very vague time period.
But there has always been terrible music mixed in with good music. But "back in the day", you were limited to what some executive or program director felt was profitable enough to make it to air.
Today, you can literally find 1 artist that you like, and one of these streaming sites will build a whole radio station around similar sounding artists that you would have never had the chance to hear before.
You got message boards like the Coli or any message board that conforms to your taste to tell you who to check for.
You can just google who's trending musically, who's making street music, or critically acclaimed music, or highly lyrical music. We in the information age breh, and all of the information is at your fingertips.