Earlier quoted context omitted.
Thwarting denial of service attacks isn’t a bug. You seem to be confused about what your rights are around website availability. Hint: you have no rights. Absent specific coercion by government, the owner of the website had all the rights. If she wants to require you to solve a Where’s Waldo first, that’s her prerogative. Your choice is to accept the terms or go elsewhere.
It's discrimination by country/region. It's like saying: oh, you are from Africa or Asia. The chance is higher you are a criminal, so do this test first.
You know why? Because the ad-revenue is worthless (and often malicious) and the users will be more trouble than they are worth. Same thing is happening with net traffic from other low value regions. One star reviews because users from $banned_region are complaining about lag due to their crappy wifi and/or some other issue you have no control over (defective ram in their 6 year old 2nd hand phone comes to mind)? Sign me up!