Did you read their comment beyond the first two words?
They explicitly said to stop tipping by deciding to instead go to places that ban tipping, price goods higher, and pay their employees fairly. None of your argument about "you need to tip people who rely on tips" applies to what they said. You jumped to your "haha gotcha" moment a bit prematurely.
If you assume they're from countries with weaker economies. Meanwhile, I live in the US, and I survive under the poverty line. Nothing about the US is 'region-locked', I'm just treated like shit for being disabled. It's a lack of income first and foremost.