Not sure where you got that one; they were net profitable for two full years at least. They were generally FCF-positive, and could have reached paper profitability fairly easily at the cost of reducing spending (though their shareholders likely wouldn’t have liked that; the markets like to see smallish tech companies spending what they take in, not paying a dividend, as a general rule).
Twitter was not a massively lucrative company, but the idea that it was financially near death is a myth.