This has been true for many, many years.
I'd like to speculate why.
It comes down to simple lavor consistency. Granted, you and I think that there isn't much flavor there - OK, none - but people like mild. The majority of people, cigar smokers included, enjoy that.
As further proof, consider how popular light beers are. How many like micro brews or craft brews with some real body and flavor in them. Personally, I'd rather have a glass of water, iced tea, or diet Coke to a light beer.
In my own personal opinion, light beer and Macanudos are both about as useless as mammoric organs on a male bovine.
I don't know if that makes any sense, but... In fact, when I look at cigar smokers sitting around enjoying a libation - the Macanudo lovers are usually drinking light beers - the smokers of fuller bodied cigar enjoy a fuller bodied beer or other libation (single malts, cognacs, ports, etc...).
As I said, just my