system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can a song in someone’s video on YouTube get them in trouble, but “lyric” videos can play that same entire song?
gpt
Depends on what you mean by "trouble." In most cases, trouble means demonitization, the person uploading the video no longer receives money from YouTube for the video, the money goes to whoever makes the copyright claim. 

If you are a creator that is actually trying to make money off of YouTube video content this is a problem. But if you're just a fan, don't care about making money (and possibly never even monitized the channel to begin with), it doesn't matter.