You can programmatically disable Gutenberg network-wide by adding a must-use plugin containing this code:
<?php
add_filter( 'use_block_editor_for_post', '__return_false' );
You can programmatically disable Gutenberg network-wide by adding a must-use plugin containing this code:
<?php
add_filter( 'use_block_editor_for_post', '__return_false' );