I mean, Ru-da isn't totally wrong on his assessment of the situation, but he is a) ignorant of the full picture, and b) blinded by his increasingly obvious crush on Dan-i. Anyone on his position would have arrived to the same conclusion, and like any other guy being obviously in crush he will do the simultaneously selfish and caring thing of calling out what he perceives as false friends having Dan-i as their Pettigrew attach/muggle accessory friend to make themselves look better. The problem is that the little future mafia lord not only hadn't realized that her friends do legitimately care for her in their flawed ways even if they hadn't realized their own exceptionality and how it affects her, the dumbass decided to bluntly spew it to the person in her circle that is the closest to arrive to his own love epiphany towards our transmigrated MC. Pretty boy is gonna get trashed.
Ah,more telenovela level antics...