Wish it was not needed, but Compete.com requires it from developers to prevent fraud usage of their API. fwiw, the Compete Stats API is usually a premium/paid service from Compete.com and the stats are generally not made available for free at scale.

Anyways, that is why it was made easy to shut off completely in case people didn't want to deal with it. Also making this behavior very clear in the next update within the extension itself (not just the welcome/upgrade pages). Privacy is critical.