Obviously you were able to tell what is obvious extrapolation in a marketing claim and not blow it out of proportion and somehow work yourself up into taking offense to it like OP did. Simply put, bitcoin isn't any more accessible to people than Visa is, but I would say that Visa is certainly easier to learn and understand to the uninitiated than bitcoin is.
It's not so much the claim itself that bothers me. More the attempt to blur the lines and make it more difficult for the uninitiated to tell the difference between what's on offer. It feels to me like that was the intent behind it.
As others have already pointed out, they're not likely to get many new customers from advertising. So the only reason I can think of why they would want to broadcast this message is to influence the mindset of the customers they already have. They don't want to lose their fairly dominant position in the market, so it's in their interests to convince people that they've already got everything they need. It's better for Visa if people aren't looking at other options, so they want to give people the false impression that Visa is offering all the same benefits as the competition.
I know pretty much all advertising is dishonest in one way or another, but this just seems more pernicious. Like they're co-opting the narrative. Using our own words against us to make it sound as though we can't offer people anything different.