MDD: “Do not judge” is not a Jewish principle because Judaism never had to deal with a mass of people who weren’t frum and didn’t completely leave Jewish society at the same time (we had similar cases in Bayis Sheini, but there the non-Mesora Jews were actively trying to sway the Frum Jews, which is no longer the case nowadays). Nowadays we have to deal with an issue that we’ve never dealt with before. If we still has Misos Beis Din these non-Frum Jews would be in trouble. How to deal with them would be up to a Sanhedrin. For us, we just need to live our own lives and let the Kiruv professionals and their Poskim decide the best way to help the most Jews do the most Mitzvos possible.
