Sam 2: but didn’t the avos keep all the mitzvos? the shevatim would have learned much torah from yaakov avinu, Rashi even brings the midrash of Yosef specifically learning the sugyah of Eglah Arufah.
So are you instead saying that they knew the mitzvos but purposefully didn’t keep them, because they were patur before kabbalas hatorah? that seems like a big stretch and you need a rai’ah.