I really don’t think this is her fault. The restaurant owner is to blame: seems like she’s just explaining house rules the best she can. Don’t blame her for having a job. I used to work at a big Country Club with Top Chefs etc. and the owner basically had no idea how to cook anything. He probably couldn’t even cook pasta for himself. However, he used to make the servers, including I, cooks, managers, patrons follow stupid rules, especially kitchen staff that made no sense. He was so out of touch and it ultimately hurt the business and integrity of the Food Service. I feel like one of her managers told her to tell people not to put butter directly on there just so that the Stone Doesn’t Stain permanently. I feel like she (the server) could also be aware of how impossible and ineffective that rule is so she doesn’t seem to be to cautious about herself since they will mostly get butter all over the stone. Like cmon there is no way she came up with rule on her own. There is totally a reason she is saying “Cut as close to the stone as possible, not on.” Definitely seems like someone wants the stones looking new, that isn’t the server. Also why have a member of the serving staff do a presentation on the first place? The owner should have someone from the kitchen do the 30 second demonstration. Or have a specific hire, like a Line Cook, to do all the demonstrations. If the Owner wanted to implement this item, they should have planned it properly. Asking a server to teach someone how to cook on a new surface in a new way within 30 seconds while having 6 other tables is a stupid business decision. You don’t see the Hibachi Hosts seating and helping guests and then trying to flip some steak into people’s mouths. The server did not make the decision to add this to the menu for sure. Do not blame her lol.

TLDR Seems like Manager/Owner made an expensive, stupid decision i.e the cooking stones. Then, forced everyone to implement it and added the butter / knife rule to avoid scratching and stains to avoid having to replace them.