Toi,
The Chazon ish is YD Siman 2 sif 16 concerning Ts”n
you are calling Yidden kofrim. How can one be kofer Hashem, when they have no idea about Hashem. Do you have any idea how many Yiden are taken in by Reform/Conservs because they have no Jewish education and don’t know what real yiddishkeit is. Ref/Cons is way more convenient just because they are all over. They are also more welcoming than most ortho shuls. This is the musser we need to take during these days.