Tropes Are Promises
A genre trope is a reader expectation. Subverting it means fulfilling the emotional promise while changing the surface delivery. Subversion that abandons the promise feels like betrayal. When a reader picks up a romance novel, they are promised the emotional experience of connection. When they pick up a mystery, they are promised resolution. The trope is the mechanism for delivering that experience. You can change the mechanism. You cannot deny the experience. Genre readers who feel their emotional contract was broken do not feel cleverly subverted. They feel cheated.