Is a trip to the Amazon hardcore to certain people, like the couple that literally cut their trip short because sleeping without a wall fan was too miserable for them, that aren't used to / suffer in such conditions? I would argue yes.
I think that says more about them than your trip though. Your trip is on the lower end of the spectrum. I mean even for Amazon trips it's about as easy as possible, some guide taking you to a lodge set up specifically for tourists.
Read some stories about the people that go up the Amazon on local boats, go deep into the Amazon camping etc. I agree with others that you have used a lot of hyperbole and overly dramatic words. I think with people that have travelled those kind of over dramatisations on blogs always leave us rolling our eyes thinking "who is this guy trying to impress?".
With 1 being sitting in an all inclusive beach resort and 10 being some extreme expedition, your trip is around a 4. Hardly "hardcore".
