Strange take, as if this isn't largely a tool for designers to experiment with type scales?
I just get sad for the designers who have to battle this stuff every day. No programmer would take "input" on their code from a nurse (say), but designers face "input" on their decisions and their craft at every turn. I've yet to meet a designer who was longing for a web form to input a bunch of numbers to generate some type sizes.
But I could be wrong. It happens a lot.