In the United States, the median income is only about $19k (I’ll assume this is per capita, so includes those not in the workforce):
https://worldpopulationreview.com/country-rankings/median-income-by-country
Say $2/hour blogging and a nominal 40 hour work week, that’s $4k a year. A few Balkan counties (Montenegro, Moldova, Macedonia) fall in that range and much of Latin America and most of Africa is below that. So for quite a few countries maybe not great as a full-time job, but still, a decent side gig.
But, sure, it would usually take several years of plugging away at it to get there.