“hence throwing into question all conversions done by them.”
Still requires an investigation into each and every case. Regardless of the question there is nothing in halachah that permits an *en masse* pasuling of conversions. Must I remind you what Chazal say about a beit din that doesn’t hear from all parties involved before deciding a case? Sorry, but you can’t make up halachah.
And if R’Druckman’s actions were so offensive, why didn’t the charedim take down the government? He was a government appointee and the charedim had the votes. Fortunately the religious judge on the Israeli Supreme Court restored things to proper order.