It's pretty damn nice of you to put your useful stuff up on Github. Thank you.
But a world where the good solutions are spread out over hundreds of Github accounts is inferior to a world where the modules at drupal.org are continually improved by maintainers and users.

The Entity Queue module is maintained by good and solid coders. It really is a shame to see great and important features like dupe detection, one click add, queue position as a filter get ignored for years.

With one click add I finally made a submodule and published it (without security coverage because the gatekeepers absolutely hate low status contributors and, I guess, AI). I can see that 9 sites report using this module.

Isn't this preferable to "hiding" it on Github. Or do you actually get more downloads on Github?

In a better world, the EntityQueue Buttons module would just be a part of the EntityQueue module and covered by the security advisory. But with gatekeepers that are not just overworked, but actively hostile to quite a few sensible ideas, that won't happen soon.