bp_xprofile_remove_bp_xprofile_change_field_visibility( bool $user_can, int $user_id, string $capability )

function bp_xprofile_remove_bp_xprofile_change_field_visibility( $user_can, $user_id, $capability ) {

	if ( empty( $GLOBALS['profile_template'] ) ) {
		return $user_can;
	}

	$field_id = bp_get_the_profile_field_id();

	if ( $field_id ) {
		$first_name_id        = bp_xprofile_firstname_field_id();
		$last_name_id        = bp_xprofile_lastname_field_id();
		$nick_name_id        = bp_xprofile_nickname_field_id();
		$display_name_format = bp_core_display_name_format();

		if ( $field_id === $nick_name_id ) {
			$user_can = false;
		}

		if ( 'first_last_name' === $display_name_format ) {
			if ( $field_id && in_array( $field_id, array( $first_name_id ) ) ) {
				$user_can = false;
			}
		} elseif ( 'first_name' === $display_name_format ) {
			if ( $field_id && in_array( $field_id, array( $first_name_id ) ) ) {
				$user_can = false;
			}
		}
	}

	return $user_can;
}