Are you sure? When I visit my profile and follow "forum posts" I come to "Posts made by ..." https://moodle.org/mod/forum/user.php?id=xxxx which lists _all_ the forum posts I made in moodle.org, which means every forum in every "community" (course) like Moodle in English, Deutschtes Moodle, ...
The only way I knew to list all my posts in one forum is through the "Advanced search" aka "Forum search".
Warning: The search system in moodle.org is going through some kind of restructuring right now. See https://moodle.org/mod/forum/discuss.php?d=336230.
P.S. Isn't this a discussion more suitable in the "Moodle community sites" forum https://moodle.org/mod/forum/view.php?id=7135 ?
Moodle community sites
How to list all my posts in this forum ?
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