> You can drop api28.webovernet.com and the other site into your browser to see where they lead, but we’ll save you the suspense: they are actually redirects for the API for a company called Similar Web, which is one of many companies doing this kind of tracking, and selling the data so other companies can spy on what their competitors are doing.

Is that part of SimilarWeb Pro? It's not clear from the website how their service could be used to monitor the web client traffic of specific companies. An independent reference on the quoted claim would be helpful.