It does! Here's a bookmarklet with that added (generated here: https://caiorss.github.io/bookmarklet-maker/)

javascript:(function()%7Bfor(u%20of%20document.querySelectorAll('.hnuser'))for(u.prepend(c%3Ddocument.createElement('canvas'))%2Cx%3Dc.getContext('2d')%2Cc.width%3D18%2Cc.height%3D14%2Cc.style.imageRendering%3D%22pixelated%22%2Cs%3Du.innerText%2Cr%3D1%2Ci%3D28%2Bs.length%3Bi--%3Bi%3C28%3Fr%3E%3E%3E29%3EXX%2F3%2BY%2F2%26%26x.fillRect(6%2B2X%2C2Y%2C2%2C2)%26x.fillRect(6-2X%2C2*Y%2C2%2C2)%3Ar%2B%3Ds.charCodeAt(i-28%2Cx.fillStyle%3D'%23'%2B(r%3E%3E8%260xFFFFFF).toString(16)))r%5E%3Dr%3C%3C13%2Cr%5E%3Dr%3E%3E%3E17%2Cr%5E%3Dr%3C%3C5%2CX%3Di%263%2CY%3Di%3E%3E2%7D)()%3B