That's because you're not describing audio production. You're describing audio reproduction.
In audio production you typically need to keep many audio sources in sync. It's not the latency of a single path that matters so much, it's that you need control of relative latency between different signal paths so that you don't introduce phasing effects.
In audio production you typically need to keep many audio sources in sync. It's not the latency of a single path that matters so much, it's that you need control of relative latency between different signal paths so that you don't introduce phasing effects.