Thank you for your question and the nice complement at the start of your post.
Symptoms can vary greatly from person to person.
This wide variability is what leads to seemingly contradictory and confusing information. In reality, the symptoms related to HIV and AIDS can vary greatly from one person to another. However the severity of these symptoms can vary greatly from person to person. Some people who acquire HIV may have severe flu-like symptoms. In other people with HIV, these symptoms may be very mild.