Anybody blaming Nas in 2023 for how Nasir turned out is smoking crack. Multiple people have broken down what really happened and idiots still think Nas should have done something like get the album cancelled or delayed it. How can you stop an album from coming out the day before release and you haven't even heard the final version, full of beats you didn't even rap to? The album was made in a week. Kanye treated it like a high school English paper, and it wasn't even finished at the release party.
Nothing was stopping that album from coming out when it did. It's clear that Kanye didn't give himself or Nas enough time to make the album great, but the seven-song album marathon had to go on. When Jay-Z was making Kingdom Come, L.A. Reid told Young Guru that the album had to come out by the end of 2006 because multiple jobs were on the line. Jay was doing shows at the time and he would have to record immediately afterwards in order to get the album done. That's why he sounds weird for most of it because his voice was tired from the touring. But the album had to come out when L.A. said.
If Kanye had played his cards right, who knows? Maybe he could have produced six Nas albums in three years. But we'll never find out.