It's quite possible. However, while most tranny chasers like the idea of nailing a "passable" tranny while knowing they are really screwing a guy, Wu is not very passable at all, and wasn't even before getting SRS, so he may be getting off on the fact Wu is a minimum effort tranny who doesn't really try to pass, and Wu's hackjob SRS may have been intentional to cater to this.
This is supported by the known fact they were involved before Wu had it cut off and both before and after Wu did a miserable job of looking like a legitimate woman.