How to turn off all core CSS?

Just fully updated my site to WordPress 7.0.1 and I still have the “Load Combined Core Block Assets” plugin and it’s saying to come to the forum to ask if I need it. I still have a site that runs a very old template theme that is using the old editor and just basic HTML/PHP layout and all of that. I have my own custom CSS pages made that I use and I don’t use any of the blocks or new Gutenberg parts of the WordPress system on the site. Still just old school editing and styling and that’s fine for what I need to do for now.

To disable all of the extra CSS that is input onto posts I have to run this plugin and keep it turned on. I’ve also de-activated a few default filters to make sure it doesn’t input the CSS into the header or footer automatically since this often happens. And in my functions.php I also still run this:

function remove_global_styles(){
wp_dequeue_style('global-styles');
}
add_action('wp_enqueue_scripts', 'remove_global_styles');

I’ve tried turning off the plugin, removing the code from my functions.php, and all of this and is still automatically adds the core blocks CSS to my site header no matter what. I can’t get it to stop and disappear unless I turn this plugin back on and flip everything else back on with this code. It’s the only way to stop any of it from appearing – which is my goal for my site. I don’t know how else to get this fixed? Maybe I am someone who still needs to run this plugin? Just posting and asking to check and verify anyway. I don’t need any of the extra CSS that the latest WordPress versions add to themes in the header/footer. None of it. Just not sure how to easily get it to stop. Thanks for any help.

• This topic was modified 14 hours, 6 minutes ago by ABX.