Query returning wrong results

It's ignoring the "where" part.

Showing courses that the user_id is the current logged in user. What am I doing wrong?

public function index()
    {
        echo auth()->id();
        $courses = \App\Course::withCount(['modules' => function ($query) {
            $query->where('user_id', auth()->id());
        }])->get();
        return view('courses.show', ['courses' => $courses]);
    }

CREATE TABLE `courses` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `title` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
  `active` int(11) NOT NULL DEFAULT '1',
  `description` text COLLATE utf8mb4_unicode_ci,
  `created_at` timestamp NULL DEFAULT NULL,
  `updated_at` timestamp NULL DEFAULT NULL,
  `slug` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=25 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

America is responsible for this.