It is a controlled situation. controlled situations can be learned and manipulated making them if not easy, at least doable by INTPs. These include school, sports, even church, among others. The situations that INTPs just blank in are open situations, such as a one on one conversation that does not take place in a specific setting, like a photoshoot. While I will not deny that the exposure to people in general has helped, I would not say that modeling, or any other controlled circumstance, will truly benefit an INTP when it comes to sociality.