>As far as scaling Bitcoin goes: prove it. It’s been a decade and it still does 4tps.

Sure. The Lightning Network already exists, is working and in use, and can in principle do essentially unlimited TPS.

Bitcoin doesn't need to scale to millions of TPS to be successful (since payments and microtransactions aren't its only use case), but it so happens that it can do that through second layer technologies.

Pointing to a Visa card to solve crypto scaling is probably not the argument I’d go for.

That's exactly how the Bitcoin's payment layer scales. Visa is just one solution, but that's probably the most popular one. The settlement layer doesn't have to scale, because it's possible to scale the payment layer. You get all the benefits of sound money with the usability of fiat money.

It scales by using the system that Bitcoin was supposed to replace?

Again, that’s not an argument for Bitcoin, just so we’re clear. This is an argument for visa instead.

Eh, that was an example that everyone can grasp. A more inline alternative would be Lightning Network.

No, Visa is a payment network that works with any currency. Bitcoin replaces the US dollar, not Visa.