Ok correct me if I’m wrong, but the rationale is pretty much that since there is a commercial version of Wordpress that this app interacts with, the user should

Ok correct me if I’m wrong, but the rationale is pretty much that since there is a commercial version of Wordpress that this app interacts with, the user should be able to purchase this through Apple’s payment gateway? If this is correct, wouldn’t the same logic apply to other tools, such as JIRA and Trello and whatnot? Or am I mistaken?