As others have said, the fact that it is included is worrying and a reason I would not even test drive, however promising it looks, sorry.
Also, opting in for analytics means implicitly opting in for marketing and promotions per the linked site:
"marketing and promotion of our Services or related products, for example sending communications (including by email) for these purposes on our, or a third party's behalf. If you do not want us to use your data in this way please let us know by contacting us at: info@defold.com; "
shady
I don't know about Defold, but I'm getting lots of emails lately that goes like, hi customers, we changed our privacy policies and toc, make sure you read the hundred pages the following link and notice the subtle changes in wording without us providing a diff or breakdown. It is this easy to change default behaviour.