If I remember correctly Dark to some extent relied on time travel to have time travel in the first place, i.e. Claudia Tiedemann needed to go back in time to hand H. G. Tannhaus the blueprints for the time machine that she used to go back in time with. That, in one of the alternate timelines- in the original timeline Tannhaus presumably made a time machine from scratch, or there would be no alternative timelines. In the end Jonas Kahnwald and Martha Nielsen go back in time to alter the course of the original timeline, thus eliminating their own. This is much like you say, except that in the end the original timeline is restored to the point before any time travel could happen, or had a reason to happen. And maybe that's a simpler way to eliminate any paradoxes: no time travel allowed [edit: yeah, sorry, that's Novikov].
The part I'm referring to specifically is the concept of The Knot, the two timelines that were dependent on time travelers from each other to make the changes that caused them to exist.
Of course the show ended with eliminating The Knott, leaving the only paradox as being where two people suddenly materialized in the middle of the road from to warn about a bridge being out before just as mysteriously ceasing to exist.
If I remember correctly Dark to some extent relied on time travel to have time travel in the first place, i.e. Claudia Tiedemann needed to go back in time to hand H. G. Tannhaus the blueprints for the time machine that she used to go back in time with. That, in one of the alternate timelines- in the original timeline Tannhaus presumably made a time machine from scratch, or there would be no alternative timelines. In the end Jonas Kahnwald and Martha Nielsen go back in time to alter the course of the original timeline, thus eliminating their own. This is much like you say, except that in the end the original timeline is restored to the point before any time travel could happen, or had a reason to happen. And maybe that's a simpler way to eliminate any paradoxes: no time travel allowed [edit: yeah, sorry, that's Novikov].
Sic mundus creatus est :P