Am I wrong because I'm going to take my son's ps4 he bought himself?
Is he trying to get rid of it?
Yes, I think he was trying to get rid of it.
It is wrong to take people items they buy for themselves. You should ask before you take it so he doesn't think you stole it. It might make him mad at you if you take it.
How is he kid, I will take it anyway I want to.
You need to just leave his things alone and let him be. If he wants to sell it he can, he spent his own money on it.