Do you hear criticism of my workers who take up an offering or have a book to sell for profit? Everyone needs to eat, including my servants and those who criticize them. Do they work for free?
I make it clear that the workman is worthy of his wages and those who labor in my vineyard are entitled to eat the fruit of it. Are those who charge for their services in a position to criticize those who live from freewill offerings? Someone who will not believe will grasp for any objection no matter how weak. The more telling observation is how much my people are willing to sacrifice and give freely.