[Avodah] An old Pshat and a Question About Milchig on Shavuos

[Meir Rabi]

The Malochim protested that the Jews should not be given the Torah. Moshe
Rabbenu told them that they had eaten Basar BeChalav when they visited
Avraham Avinu and that silenced them. [Clearly a different approach to that
of Rashi on the Chumash] The Meshech Chochmah explains the exchange between
MR and the Malochim.

Question:
How was AA permitted to cook BBeChalav?
Even if it occurred inadvertently it is Assur BeHAnah, he would not have
been permitted to serve it to the Malochim.
How did their transgression disqualify their protest?

Answer
The meat that AA cooked with milk was Pareve. It was the meat of a Ben
PeKuAh, the foetus found inside a slaughtered beast.

So what's the problem if the Malochim ate it?

They should have declined AA's offer for the Beef Stroganoff on the menu
since they held AA was NOT Jewish and therefore could NOT Shecht and
consequently could NOT make a Ben PeKuAh. BUT they did not object because
they accepted that AA was Jewish and he could Shecht and he could make a BP.

So Moshe Rabbenu told the Malochim, It's too late for you to object. You
accepted many years ago that the Torah is ours.

Absolute Gaonus.

For this reason we have the Minhag to eat Milchig on Shavuos, it was the
argument through which we gained the Torah.

I was asked by a young Bochur, if that's the case we should be eating BP
Beef Stroganoff on Shavuos?