/?author= Login Issue

Is there a reason that iThemes Security (or WordPress for that matter), does not include something to combat bots using ‘/?author=x’ (where x represents the WordPress user ID).?

Adding the following in .htaccess prohibits the bots from using real WP usernames to attack your site.

RewriteEngine On
RewriteCond %{REQUEST_URI} !^/wp-admin [NC]
RewriteCond %{QUERY_STRING} author=\d
RewriteRule ^ /? [L,R=301]

I found the reference on:

https://www.wpbeginner.com/wp-tutorials/how-to-discourage-brute-force-by-blocking-author-scans-in-wordpress/

Am I missing a setting in iThemes Security?