Slifkonian

It is actually unfortunate that this question has to be asked. If this person has good middos, learns, and also fulfills Chazals directives to be self sufficient, then what is not to like? What do you mean that his shittos might be too modern? If he has legitimate Torah views, then good. And the views of hesder Yeshivot such as KBY and Gush may not be mainstream, but they are definitely legitimate.