Maybe, especially considering the system encuraging him to sleep around to get his pent up lu** out of his system. I like to think he is unsure of what to do with himself and exploring options, as if he didn't have the system. Due to the penalties if he fails a mission, and reaching 0 point balance meaning becoming brain dead, the MC doesn't like to use the system unless he has no choice.
From that perspective, his cautious approach is justified.