Remember the days when sig campaigns paid out a certain number of satoshis per post or per week? Back then bitcoin was probably under $15k or so (I can't remember exactly when they all transitioned to a fixed dollar amount), and people still made livings from them--but in countries where the cost of living is low. That's the whole point of this thread, to figure out what countries in which it might be feasible to live well solely on the proceeds of sig campaigns.
Although I haven't participated in any signature campaigns, I discovered that the average pay for current signature campaigns, with the exception of Chipmixer and other larger paid campaigns, ranges between $40 and $100. In my country, Nigeria, the cost of living varies depending on where you live. In my own neighborhood, one can survive on a $100 weekly income and even support one or two people, depending on the situation, because the cost of living is low. However, in some areas, the pay will be adequate for your personal needs due to how expensive things are in that particular location.
However, if you earn up to $300 per week, it is confirmed that you can live a king's life, support others, and save some money.