My guess is he was asking why cant you just add an overrride to that logic and make this specific recipe work differently.
Also do I understand it correctly that by inserting the lithium last with small amounts when everyting is at above the alloying temperature then when a piece of lithium is inserted the first tick it will melt and alloy together and does not have time to boil? If it lasts one more tick (which it does not in this scenario) it will boil?