In my experience it’s almost too easy to create a chargeback and the whole system is grossly inefficient and ripe for abuse.

I once called in to make a price protection benefit claim (would refund the price difference of a purchase). The agent assured me it was done and I find out later all they did was create a chargeback and I got refunded the entire price because the merchant didn't respond to it.

The dispute resolution system seems like it gets no investment or attention from any stakeholder, a merchant could easily get DOSd by spam disputes if some sort of consumer protest were organized. That’s how overpowered of a consumer tool it is.