Well, I don't know if this will answer your question
SARS uses the following to determine if a person should be taxed as a SOUTH AFRICAN citizen...
Following requirements are necessary to be called a SA Citizen:
You had to be living in SA for
1. 91 days in the current year.
2. 91 days in the previous 5 years before the current year.
3. A total of 915 days in the previous 5 years before the current year.
Maybe if you adhere to these requirements your qualified to raising comments about SA, notwithstanding the extra experience and perspective the person actually gains by travelling and living around and comparing it to living in SA?
I hope I answered your question?