>>>RShach had actually a very negative view of Peres.
He even refused to meet him during the eighties and nineties.
As opposed to Rabin who did agree to meet.
I highly doubt Rav Schach ever met Yitzchok Rabin who was a lot more secular and had a less interaction with the frum world than Shimon Peres.
Rav Schach’s view of Shimon Peres in the 1990s does not detract from the hakaras hatov felt to him in the 1970s. Or any subsequent time either. If there were a secular politician today who strongly championed the cause of not drafting Yeshiva bochurim, few people would feel hakoras hatov to him, the kanoim would hate him anyway. Back then things were different. Even members of the American moetzes went to to Moshe Dayan to personally thank him for having fought that Yeshiva bochurim should not be drafted