I prefer to think that we are riding in a bubble that can pop any minute now. This line of thinking allows me to be more responsible with spending and save more for rainy days.
$130k is barely over the median pay for a Senior Software Engineer in the United States. A lot of the people stewarding and maintaining these projects are talented enough to be earning wages that are much further into the outliers (i.e. FANG compensation of 300-400k+/year).
That's all I'm saying. What's much more likely to be happening here is that the maintainer of Babel took a much harder job that cannot be summarized by output metrics like GitHub activity tracking.
Attacking him and essentially tossing around accusations of embezzlement when you've just received VC funding for a competitor is just wrong.