This is my first time reading this story, and honestly, Yohan is completely reasonable to feel uncomfortable and doubt his intentions. If anything, I'd say he isn't paranoid enough since he still lives there comfortably and gets paid a lot for no apparent reason.
It's crazy for him to just give away the clothing. But you know what? He stated multiple times that he wasn't comfortable with it and ML still pushed these things on him anyway, so why is he supposed to just go along with it? The story doesn't seem to take itself too seriously so I won't overthink it, but it's not noble or flattering to have a rich person throw money at you when the undertone is clearly one of superiority or patronizing attitude.
Good for Yohan for maintaining some dignity and making ml work hard 