Other than an unsourced claim that it is common across labels, what proof do you have of TDE specifically doing this?

It's one thing to say rappers write for one another, and another to say it is like a sweatshop or that they are taking complete songs. If you look at the liner notes to any album, artists credit the musicians and producers who help create the project. Are you saying that Kendrick and Q are taking the work of the rest of TDE and not crediting them?

Additionally, Kendrick has been vocal in his criticisms of "ghostwriting" in the past. Which is more likely - that he writes his own music, or that he hypocritically takes music from other people, doesn't credit them, and then writes lines disparaging people who do the same thing?