Is there a penalty for declining too many requests?

[Australia]

There’s a bit of chat about this here (i’ve only declined 1):

@Australia

I ignore the “decline” or “accept” button and just have a conversation with them until they tell me what I need to know to accept them. If they don’t give me that info it doesn’t block others from booking. (it just then says “not possible” next to their message once I have accepted someone else for those dates or even part of their dates)