Spigot only checks PREMIUM plugins, and that's only the first update, you also do realize malicious plugins get uploaded onto spigot as well, right?
https://www.spigotmc.org/threads/malware.362192/
https://www.spigotmc.org/threads/more-malware.364408/
Also i'm not saying "Go pirate plugins" as for the one check, I completely forgot to redact it from the logs, expect an update soon to fix that
Edit: This also isn't a plugin, it even says that in the resource description
Edit 2: The newest update fixes the whole log issue