Trying to convince my wife took 25 years :)
I married into a family of hoarders and Hubby definitely has the gene. LOL!
Moving into the other, newer house on the farm has many plusses and one is it was empty. We’ve moved what we need over here and none of the rooms are cluttered - - other than his. He knows if he leaves anything lying around outside his room, it WILL get tossed in the trash and burned. With relish. LOL
I doubt he’ll ever change. I just have to keep some control of the situation in the house.
If you got your wife to change her ways, you are lucky!