Outdated...yes. 1970 technology.
We have developed a method of installing 5/8" backer rod behind the jamb from the interior which takes about 10 minutes per window.
Todd indicates a storm window use as well but he is in Minn. The compression liner, being made of plastic, tend to allow air leakage over time as the foam backing looses its rigidity. The Jeld-wen Zap pack uses two ridgit flanges in addition to help the liner be supported. Storms are not required here as a recommendation due to the lower wind ratings than what Todd has. Keep in mind many new windows with compression jambs would benefit as well with storms in a windy area. Structural performance of windows are tested at a rate of approximately a 25 mph wind.
Last trip to Warroad, Minn. I had to put rocks in my pockets to keep from blowing around and in Warsaw, WI. the traffic lights do not hang freely as they do here. They are mounted securely as not to be blowing all over the place.