a company ready to mass hire, implies ready to spend, this bolsters an impression of profitability and expansion, and is gaming speculations of future stock value.
But wouldn't that fact that, as you point out, job postings aren't a reliable indicator of business performance precisely because of their propensity to be BS itself diminish any impression they might bolster?
In other words, why would investors who want to use hiring as an indicator of performance deliberately look at job postings, which they know might be BS, instead of payroll budgets on the financial reports, which aren't?
How so?