Hah. Already did that in version v2.2 :)
I'd still love if those icons/links were actually hidden in a popup and not removed altogether - they serve a nice discovery purpose for peoples' Github / FB / Twitter accounts and personal websites (inb4 privacy - this is already public info for HN users if you put a keybase proof in your profile, just usually requires extra two clicks to get to).
EDIT: just installed on mobile. Works great, but the clutter introduced by the icons is extra pronounced on the phone.
A popup will happen eventually, but that'll take a bit more development effort.
The as-a-dropdown-from-Keybase is probably the best solution.