Finally found a Wikiless instance that isn't outright broken: https://social.076.moe/url/243844

wikiless.org has forever broken CSS, wikiless.northboot.xyz redirects to the English homepage on every Japanese article, wikiless.sethforprivacy.com and wikiless.lunar.icu are down, and wikiless.tiekoetter.com uses a light theme by default.