We don't sell your data
We already heard it over and over and we all know you don't sell the data because you can monetize them better by selling just their usage for targeting without disclosing to others what you have and losing the ownership.
We don't monitor - 'monitor' has a specific meaning, you may not 'monitor' and still 'collect' data - on the other side nobody would object to the monitoring of pure performance data, say latency or packet loss.
Anyway, they offer also a free service, again, where the money come from?