Not currently. In Q2A 1.5 it's possible to delete users using function qa_delete_user(...) in qa-app-users-edit.php, so a plugin could use an event module to note when the user was blocked, and then some time later delete the user if they weren't unblocked.
Here, I am going to share a best way to solve this problem using database.
Click here to watch this video to remove or delete spam users from q2a.
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July 15, 2020: Q2A 1.8.5 released!