From what I know ofrom past experience uploading videos with songs in them, Youtube has several different actions on copyright violations
-The whole video gets taken down and you get this:

-The whole video gets taken down and you get this:

-You the audio is taken off when it gets reported by someone and a notice appears in the info box
-When it's uploaded, Youtube automatically denies the audio. You can still have the video, but the audio won't be there. I've only seen this happen when uploading either new or leaked songs. I used 6'7" as background music in a vid I uploaded when it came out and the audio was just removed.
So basically, it's plausible this could be real. It probably depends where it leaked from. If it leaked from Em's camp, I doubt it's real because Em leaks are usually leaked a la Koolo and a big deal is made. If it was leaked from Yela's camp, wwho knows because I don't think anyone's cared if his stuff leaked before. I think the lyrics are definitely possible though. IDK, hope it's real.