He had to steal women’s underwear off womdn’s washing lines because he couldn’t buy it in a shop.
First, I don’t believe he couldn’t have bought a few items in a department store. I used to work in one and wouldn’t turn a hair at a man buying underwear for his wife or girlfriend. But that wouldn’t provide the thrill of stealing.
Second, he had to go into their gardens, a private place where women generally feel secluded. So, he gets the thrill of intruding, and of imagining the woman’s dismay at knowing someone has been mauling her clothes.
But the CPS is fine with this.