Well, for myself, I'm sorry you feel Moodle consistently makes things more complicated for you. I would say that is not my personal experience having used a number of different systems, many of which are 'simple' because they just don't do the things Moodle does and which then make the overall VLE complex because of needing to integrate additional external software to do things.
As for the tracker being on a different login system to the support forum, that's probably because they run on different systems, the forums on moodle itself and the tracker on JIRA - while Moodle can support SSO from a number of places, I don't personally know anything about JIRA and whether that can.
Perhaps it would be worth spending the 2minutes making a user account on tracker and start adding some new feature or improvement requests highlighting the areas you feel could be simplified, where 'moodle makes things more complicated than they need to be', so that people can vote/comment on them - Both the community and the development team at HQ are always looking for ways to make Moodle better. Maybe the first one you propose could be single sign on between moodle.org and tracker.