XF 2.2 Is it safe to disallow all query strings in robots.txt for XenForo 2.x?

[bzcomputers]

I see a lot of Google Search Console errors relating to "css.php?css=" page indexing 404 Not Found errors. Was thinking of just disallowing the index of all query strings for XenForo sites in robots.txt.

Disallow: /*?*

Can someone think of a reason a query stringed link within XenForo should be indexed?