Note that this is not disable output cache which only disable for certain request, as what the documentation specified.
Found this in Pimcore 4 source code in pimcore/models/Object/ClassDefinition.php
// empty output cache
try {
Cache::clearTag("output");
} catch (\Exception $e) {
} ?>
Although I don't really agree on how this works (they did not specify that "output" is a reserved keyword for cache tags).