Option to Ignore Todoist Incompletable Tasks

In Todoist, you can apparently set a task that is impossible to complete if you start the name with an asterisk and a space--the task then serves as sort of a reminder/comment rather than something to complete. It's kind of a neat feature.

Problem is: you can complete the task in Morgen, and if you do so unintentionally, it doesn't seem like you're able to un-complete it in Todoist.

Is there a way we could get an option to filter out those tasks, or disable their syncing entirely?