Well you’ll have to find another site then.
This isn’t necessarily nefarious on their part. It is owned by a US registered nonprofit. Most likely their servers and staff/volunteers are in the US. This consent form is more informational likely to comply with GDPR so that you know where your data will end up.









No comment on the textbook your are writing something on as I haven’t read it.
As for degrees and imposter syndrome, I feel you on that. Though as a counter point I recently finished a masters degree. Many of my classmates who also successfully graduated didn’t really understand many concepts in the program, they were confused in class discussion and did poorly on exams. That said they still have degrees. It also is worth mentioning that many lecturers lacked real world experience so could only state theory which doesn’t hold up in reality. One even made a technically incorrect statement regarding how PKI works. So with that in mind, don’t let a degree be the only determining factor.
Also 2 of the 3 highest scoring students in the program have completely unrelated undergraduate degrees. So your STEM degree can still hold weight in more social science fields.