4- I have seen some great people do the same with Matzah and Korach as well. Great people are consistent.
Please. Please name me one person who cuts their matzoh with a knife and fork and eats it without touching it with their hands.
In addition, I call foul — specifically, the foul of “moving the goal posts.”
The OP asked if it’s “unrefined” for a ben/bas Torah to eat certain foods (specifically, foods for which it is socially accepted to eat with one’s hands) with utensils.
You, on the other hand, start bringing examples from unnamed “gedolim” and “great people.” Even if your examples are true, perhaps it is something that they held for themselves but for the average ben/bas Torah, it is not unrefined.
The Wolf