“3) There are Chasidim who maintained that one must carry in an eruv. I believe they were referring to today. Arguments opposing eruvin that would do away with all eruvin (even if they are inconsistent with the application of their arguments), should be called out as apikorsis. I do not thing I missed any of your points.”
What does your first sentence mean? Wearing a large brimmed hat or jewelry? What if I never leave my house on Shabbos because I have nowhere to go? I’m curious about it, and would love sources.
I agree with you on the modern day arguments that do away with all eiruvin. It does not apply to the Mishkanos Yaakov himself.