I think we misunderstood each other. I thought you mean that with free routing the actual standard routings like a 5.1 cinema format wouldn’t have worked. But I see now that’s not what you were talking about.
Having said that though I think your point is a bit moot though since I’m betting many of those who would take advantage of “free routing” would be able to compensate for what you’re talking about. Obviously if some routing is custom it’s up to the creator to create the what needs to happen, or adjust to it, if you know what I mean.