I can't say I see the connection comparing a large framework to a custom typeface. My blog still has an average 0.3s for the first content paint and 0.7s on the

I can't say I see the connection comparing a large framework to a custom typeface. My blog still has an average 0.3s for the first content paint and 0.7s on the speed index, so the user will still have a snappy experience. In terms of the 500KB font - you are correct, I could switch over to something like Helvetica and save on that initial resource. But the typeface is a stylistic choice though, and 500KB isn't critical (once cached for subsequent visits etc.) nor is it going to eat away data caps.