When fine Pilsner beers exploded into the world of brewing, we were not focussed on alcohol contents. In the many years since, pale lager beers have been common at alcohols from low to high, with perhaps the vast majority being measured in the 4.4 to 5.2 range.
Historically, the "lighter" alcohol lagers have often been produced in response to restrictions - whether being taxation-based or war-time. Across Europe, many fine "local" brews have long been "light" in alcohol.
The USA entered a new phase of "light" beers in the 1970's with a focus on both calories and lighter alcohol. This concept spread and the appearance of "light" on labels grew.
The focus on "light" calories (and alcohol) provided an opening for "European" characteristics in a "light" beer - and distribution beyond the "local" area.
Good malty characteristics underscore a full hoppy aroma and cleansing afterbitter, all within a beer containing moderate calories and alcohol.
