Why does WordPress allow outdated plugins in their directory?

Why does WordPress allow garbage like this to still be listed in their directory? The plugin does not work and now it still redirects to my subdomain and doesn’t work even after uninstalling it.

Now, I have to comb through my database to remove the redirect to find out what it did to my file manager.

Given all the malware that’s been infesting your plugin directory – it would seem to me you folks should be on top of this crap.