Mdd, if you think saying “i headed from someone who heard from someone” is going to “make me think,” then i don’t know what to tell you.
But as i said, I’ll look into the tosfos and the gemara you are citing about eisav(which has no bearing on the chazon ish, since eisav was definitely “achar tochacha”)
Where does the chofetz chaim argue with the chazon ish? He also wrote his sefer at a different time, back when most jews were frum. When the chazon ish said his statement, most jews were no longer frum and society had changed a lot.