Okay. Let me educate you. Almost any group of Chassidim are not machmir more than any group to the right of MO. You will always find individual outliers, but as a group they are not into chumros. The individuals that you identify as Chassidim outside of their locale, are much more likely to be more strict in their observant than the mainstream.
Although, they have some areas where they are generally more stringent eruvin is definitely not one of them.