Dear Avira,
I’m not talking about myself. Your are missing out on a deep sugya. Oh well.
It’s always fun when people who have no clue what the story was, bring Up Rav Aharon’s battle on how to teach chumash.
Rav Aharon and Rav Moshe were constantly trying to educate their peers on how much of yiddishkeit will be lost, if people don’t dedicate their time to Limud HaTorah. This especially true with dayos.
The Ramban is in Parshas Shelach.
The Rambam is in Hilchos Teshuva 2:2
The questions stand.
What does lo sichanem have to do with non idol worshippers?
What is the threshold of fulfillment for the first mitzvah?