Just like sitting by the radio waiting for your favorite song to play, old heads tend to fetishize the idea of listening to a song closely and transcribing the lyrics themselves. And just like only listening to music on CDs, it's something you could totally still do, but seriously: Why would you? Writing lyrics down is tedious, error-prone process. Don't even start about how people stopped transcribing lyrics because "Today's lyrics aren't worth it." F. O. H. People just realized how time consuming it was. That's exactly what gave rise to lyrics websites like OHHLA, AZLyrics, and even RapGenius.
And we know what you're gonna say: "I was reading the lyrics to one of the 10 million songs on that site and I noticed a tiny error and thus I'm morally superior to that website!!!" Uh, yeah it's true that all of those sites are riddled with errors. But then again, so was a Yale University book of rap lyrics. Hell, the few rappers who put lyrics on their own linear notes often have errors. If the collective hive mind of the Internet can't figure them all out well enough, why would you, transcribing a song by yourself, do any better? Why not just appreciate those sites for what they are: Tools, and valuable free services that can help you quickly learn and appreciate the lyrics to your new favorite track.
(And yes, we use RapGenius. And we click the hyperlink for the definition just because. Stop pretending like you understand and can confidently explain every single rap lyric out there. You can't.)