@Hoomanadaw they know that he has a lot of summons which can act as the manpower to get through that u are talking about (they didn't know that the mc can't use his summons)
after following the mc because of curiosity or whatever, when they saw that the monsters are way above their league they knew that only the mc could defeat them all thus it's proved that they already knew the mc can handle himself
they went in even though the mc said not to and then tried to disturb the mc when they found out they can't handle the monsters even though it was their own fault that situation happened
even though ur comment and their self preservation makes sense it's still annoying (their behavior not ur comment)
btw I was only semi-serious in that comment