If one slaughters an animal on Shabbat or Yom Kippur, that's a violation of Shabbat or Yom Kippur, but the animal is kosher for others to eat. Which seems to line up with the view of R. Yochanan HaSandlar. And the Gemara is going to mull his view and why it lines up here better than the opinions of others do. Also, a novel insight regarding a fine that came together with a punishment that deserves the death penalty - now what? Plus, the classic "ba ba-machteret." All of which comes together to teach the sanctity of Shabbat, except for the burglar to one's home. Even in the same moment. With a surprising absence of need for warning about that sin of killing the intruder.