Milton Friedman's "natural rate" of unemployment is basically "the rate capitalists are gunning for" in an attempt to suppress wages. Quite a bit below full.
I don't see anything in that link about increasing unemployment in order "suppress wages". Milton Friedman's comments are about monetary policy. Unemployment can be decreased by increasing inflation, but Friedman thinks thats a bad idea. He not arguing that anyone should "gun" for that unemployment rate, but rather that it should be accepted as the "natural" result of an elastic market.