That seems very extreme. My Arch install on an M.2 SSD boots to terminal in about 3 seconds, and X starts in about a second. The BIOS delay is roughly 5 seconds or so. Granted it's a fairly minimal install, but that shouldn't cause an order of magnitude difference.
I don't think runit has an equivalent for `systemd-analyze blame`, but something is probably slowing things down by a lot.