Counterpoint - if someone or a group of people ghost wrote every lyric in every NIN song and TR and company paid those people money, fulfilled contracts and kept those parties satisfied, then that'd be OK because this is the music industry and this shit has happened for decades. There are MANY people who ghost write or exist solely as songwriters who have made a living off of writing and selling their songs to big name musicians. Sometimes, big name musicians do it for each other,
like with Tom Petty and Steve Nicks, for example.
Now, if TR did this and was ripping these people off by not compensating them per agreed terms, then that'd be a problem. Until we've found otherwise, that doesn't appear to be the case.
Stigmatizing songwriters for selling their songs to other musicians for any number of different reasons is counterproductive and rude. A lot of people make a living doing this. Sometimes, musicians are great at singing, playing instruments and writing their own songs. Some are good at just writing songs and selling them. Some are good at just performing. I'd list more variations but I tried to do that math in my head and that'd make this post insanely long.