If you can't make your point with small black letters, then there's something wrong with the statement, and not with the typography.
That's assuming an honest audience, which is not the case here.
The bandwidth vs storage issue has already been explained in very nice eloquent small black letters by several reputable people.
There was nothing wrong with their statements.
When we talk about bandwidth constraints but others stubbornly insist on pretending cheap hard drives solve that problem, it's time to start screaming.
By raising the profile of the bandwidth vs storage issue, I effectively call out those who conflate the two and force them to defend that position.