You're bringing your own axe to grind to this conversation. I did not say anything was "problematic" nor do I believe anyone's agency was infringed upon here. Frankly, it's much weirder than that.
OK, so why did you bring up power dynamics at all? Are you saying that this won't work long-term because he'll realise that the power dynamics are the wrong way round? That's the only way I can think of that it would be relevant, if it's not problematic.