BuddyPress.org

Would a redirect do? –

//Prevents non admin users seeing pages 
function bptest_restrict_bp_pages() {
	global $bp;
	
	if( !is_super_admin() && bp_is_members_directory() ) {
		bp_core_redirect( $bp->root_domain );
	}	
}
add_action( 'get_header', 'bptest_restrict_bp_pages' );

🙂