800 is simply too heavy - decreasing it a notch to around 700 will increase readability.
Change 332012 abandoned by SamanthaNguyen:
Decrease heavy (800) font-weight to 700 for readability
While I appreciate the 1 here, I'm not interested in working on this at least specifically right now; I want to get back to this someday but I'm currently more invested in other things.
At some point when I do I decide to come back to this, I'll restore the patch and rebase. But for now, it's going to be indefinitely abandoned. I'm currently in the process of clearing my backlog of open patches.