I worked for a UK company that amortised it’s development costs… it led to the false belief that the company was profitable when it really wasn’t
In the US, it remains the case that programmers salaries must be treated as an expense (i.e., cannot be amortized) when calculating the company's income statement, balance sheet, etc. Not following that rule will get the accounting firm signing off on those financial reports in trouble (with the SEC, the Public Company Accounting Oversight Board, and maybe even the Justice Department if the purpose of the violation was to defraud investors).
It's completely unimportant. Nobody is getting fooled "on paper" by amortized salaries.
I’ve seen it used in UK listed companies to massage the profit numbers and make divisions of the company seem more profitable than they are