So lets then assume consumers aren't willing to? Where does that leave the proposition that Bitcoin use will become widespread common currency? I agree with the OP, chargeback is an advantage of Bitcoin that only benefits seller and as most people are buyers, the advantage is overstated.
No, the advantage is clear and huge. Chargebacks are the main vector of credit card fraud and probably the biggest source of all fraud in the world.
This leads to higher prices for goods and services which are passed directly to the consumer.
By eliminating these excessive fees, Bitcoin allows businesses to operate with much lower margins which has a massive benefit to everyone.
Furthermore, credit cards as they exist today are simply exploitive of the 99%. I own a couple simply for credit score purposes.
If you cant afford to buy something or cant be sure you trust the company you are buying from, you shouldnt be buying the product at all. Period.