I do know Henry personally and Henry actually consulted me when he was debating whether he should quit his job to work on Babel full time. We also occasionally talk about the burdens of OSS maintenance so I know first hand how hard he's been trying to keep Babel afloat.
The linked comment above is one that people interested should read. Especially people who only read the relatively inflammatory and context free initial tweet.
That said, a statement from the current most active paid contributor to Babel is probably more convincing: https://news.ycombinator.com/item?id=27116357