ANSWER:

If he doesn’t uplift his major ritual impurity, this means he doesn’t pray. If he deliberately doesn’t pray, he is not muslim any more. If he prays while in that state, this is mocking Islam and an act of apostasy! 

This person is bad news and you should distance yourself from him.  

I know a person who goes days without doing ghusl especially of jannaba.No amount of explaination convinces him to take a bath. What are the ill effects and consequences of this. Can doing this have effect on rizq. Can being in impurity attract the bad jinns.