Howdy Marc-Antoine,
Thank you for letting us know that this is something you would like to see as an option. I wish we could make all of our snippets options and make like super easy for folks like you. But, one thing nobody likes is a slow or bloated plugin. And so we have to take great care to only include features that the extreme majority of people will find useful. And in this case we have not yet seen enough demand for this feature.
Could I possible walk you through pasting that snippet? Paste it at the top of your theme’s functions.php file, you can replace the first line of your functions file which will say “<?php” with the entirety of that snippet. If your theme does not have a functions.php file, go to your theme folder, create a new text document file called “functions.php”, and paste that snippet inside of the next file.
Does that all make sense? Did that work for you? Please let us know.
Cheers!
– Brook