Drupal code style has rules to format PHPDoc section, here they are: https://www.drupal.org/docs/develop/standards/php/api-documentation-and-comment-standards
But now the extension doesn't match all of them:
Here is an example of the correct PHPDoc block and generated one:
Could you please implement this?
Thank you for the suggestion! Yes, we can do that, I'm adding it to the list.
it's about phpdoc generation (and/or code formatting?)
We have implemented PHPDoc generator so it respects "php.completion.autoimport-docblock" setting.
Set it to "fqn" to generate fully qualified names in doc comments above functions.
(available in the upcoming pre-release)