The "pumping" effect mentioned in the article is one effect of the compression I was referring to caused by agc and other methods of automatic level control. Careful use of peak limiting is preferable to compression. If you need to use so much limiting that it is audible than your signal levels are too high to begin with. The idea is retain the full dynamic range of the original recording or source material and in my opinion/experience peak limiting is used only for possible transient spikes as a precaution so you don't overdrive the next stage into clipping.