An autorouter is perfectly fine for whole classes of electronics. As a basic rule, if you'd happily assemble the circuit on a breadboard or with jumper cables and not worry about signal continuity, the autorouter will be fine.
It's only when you get to higher speed or higher currents that an autorouter won't have the context needed to effectively route the circuit.
It's only when you get to higher speed or higher currents that an autorouter won't have the context needed to effectively route the circuit.