With the 9950x3d2 is manual processing lasso still required compared to the 9950x3d?

I currently have the 9950x3d and just learned about how to use the 9950x3d to the best capability manually assigning cores is a must. Then i read some other posts about how that's not needed anymore because the x3d2 fixed this problem. Is this factual and is it worth upgrading if i don't have experience with manually assigning cores for a peace of mind?