Assalamu 3aleikum,
Sorry it took me ages to reply to this. Thats because I have been busy offline. To answer your question, yes they are against modern society( this being the mentioned group). Ill give the most important point to just summarise as this will take ages:
They are against education. This is proven by the fact they discourage people from pursuing material education and encourage them to just fight. By not pursuing further knowledge, our societies will be just backward and underdeveloped and we will never be able to fend for ourselves. That is, if they have their way. I hope thats enough.