2/ The Hive blockchain is fully decentralized with immutable transactions. However, it could be difficult to fetch the details of those transactions where there are no simplifying tools like #Hivestats.
It is important to note that users pay a third-party firm to be able to access full analytical data on the performances of their centralized websites, a service such as that Alexa.com provided in the past. On Hive, Hivestats.io makes it easier and it is accessed for free.