German accent: Is an extremely efficient and narrowly focused killing machine!

The beloved Firefox? Would you - in a nutshell - explain this to me, please ??

💥🔥🔥 this shit right here

Seems like I need to quit Spotify. Three q’s: Is Deezer more ethical? Is Deezer paying artists? Where does Deezer source it’s music? I know I could look it up but you seem to know about this stuff. Thanks!