https://krugman.blogs.nytimes.com/2010/02/13/the-case-for-hi...
It's right there in plain English: Inflation exists as a policy to screw "workers" out of the value of their wages.
Workers is a nicer way to say lower classes. It doesn't include investors, financial sector, etc, who strongly benefit from inflation.
So yes salaries go up, but not in concert with people's costs nor with the value that is generated by people's labor.