Shalom."You shall not boil a young goat in its mother's milk."
There are three interpretations of that phrase:
1. The rabbinical interpretation is, "do not cook meat and dairy in the same meal." This is extremely far from the real meaning of the phrase, so cannot really be called an interpretation. This interpretation has become the sign of being Jewish and is accepted without question by many Jews as proof that they are practicing Judaism.
2. The literal interpretation is, "do not milk a goat and then cook the same goat's kid in that goat's milk." This is not a practical interpretation, since it implies a method of cooking that is not usually practiced. The most common way to cook a kid is to roast it. Some people assume it is speaking about an ancient religious practice.
3. The best interpretation is, "do not cook a goat's kid that is so young that it is still nursing." This takes into account both the time of year mentioned in the two verses from Exodus as well as giving a broad meaning to the word בָּשַׁל bashal, which means "to boil, cook, bake, roast."
Cheesburgers are made from mature beef, not from baby goats.
I do not know about the validity of what you are saying. I do not eat meat and dairy in the same meal.
Shalom.
Jacob