I don't think so. If the model used to analyse the complexity is dumb, it won't route correctly. They clearly don't want to start every query using the highest level of intelligence as this could undermine their obvious attempt at resource optimisation.

I faced the same issue using Open Router's intelligent routing mechanism. It was terrible, but it had a tendency to prefer the most expensive model. So 98% of all queries ended up being the most expensive model, even for simple queries.