>Let’s try another more illustrative question - what would the reaction be if he were an Indian in India doing that to Indians or doing it to Americans.

Probably just a lot of people shrugging and saying "I guess this guy doesn't want us abusing his free service for our own gain" and "it was fun while it lasted".

All indications pointed towards all these people using his service in bad faith. I went to his website and it's obviously meant for cross-browser testing, not spoofing your user agent, circumventing regional restrictions or whatever it was preventing them from accessing Whatsapp directly.