For what it worth, in France so called moral rights are "innaliénables", so you legally can't get rid of them, and I wouldn't be surprised this holds in most Roman civil law countries (most countries in the world). Just like you can't decide to get rid of all your civil rights and become a slave of the nice company that promised to treat you well and free you of the hurdle to take decisions by yourself. So IANAL but this contract is not only ignominious but is actually trying to require authors to make promises that they can not legally make.

https://en.m.wikipedia.org/wiki/Civil_law_(legal_system)