Your task as a business owner is to create convenient payment methods that would be available to every customer, and not create a problem for him
If his business is about payment methods, yes but he said his business is about cosmetic products.
So what did you see as a contradiction? I am a buyer and I want to buy cosmetic products, but the owner tells me that I have to pay for the purchase only in LTC. But I don't know anything about crypto and it's very difficult for me to figure out how and where I should buy LTC to make a purchase payment. And as a result, I will buy from another seller who has traditional payment methods.