"As a manager, I feel that using metrics from productivity tools to measure productivity is lazy and counter productive."

I agree, if that is the only way you measure productivity. These tools create a more holistic view of what a person does at work and should not be the sole measure of performance.

In reality, what they make visible are the people who do little to nothing for 3+ days. Graphs that shows no work for long stretches make performance conversations much easier. It's tough for a poor worker to argue their way out of that or fake the metrics going forward.