I guess that depends on how you read it. It doesn’t read to me like it’s giving credit to Rome,but rather just expressing how widely used bright colors were during Rome’s imperial era. Romans used it extensively, whether or not they invented it, which is how the tagline reads to me personally.

The discovery of this ancient synthetic pigment highlights the impressive artistry of Rome’s imperial era.

Emphasis mine. That’s the part that reads to me like it isn’t claiming credit for Egyptian Blue as much as it is crediting the specific Roman era with wide use of Egyptian Blue.

Tomato Tomahto.