I don't think they're very typical! But it does go to show that there really is no such thing as 'Muslim culture', and there should therefore be no expectation that we should accept things that go against our hard-won values just because they're claimed to be part of a religion.
I wouldn't personally blame the increased presence of Islam for the growing misogyny in society, though I do think our unquestioning acceptance of certain aspects of the cultures of some immigrants is part of the problem. I'm very uncomfortable with any notion of 'female modesty' and teaching children that girls/women should be treated differently depending on what they wear, or that good, honourable women stay home and have babies rather than work, or that they must blindly obey their fathers/husbands. It is possible though that boys are witnessing how other cultures treat females and are following suit; if some boys are calling girls sluts that are 'asking for it' if they don't cover themselves sufficiently, or if they have contact with males they are not related to, or if they go out unchaperoned etc it would certainly seem plausible that the other boys will be influenced. But these attitudes are certainly not only Muslim, or only held by immigrants. (They are also certainly not held by all Muslims!) They have also long been part of our own culture and I think we just no longer work as hard as we once did to challenge them (which may in part be down to not wanting to insult immigrants). When I think of the people influencing teenage boys, I would argue it's more down to scum like Andrew Tait than Islamic preachers.
I think we really need to figure out what's making boys and men so easily influenced by such characters, and why they find a world where women are oppressed, second-class citizens so appealing.
(Sorry, turned into a bit of an essay!)