I am not familiar with the brand but I suspect it has something to do with the bikes generally being of the lowend of the quality spectrum. Personally if it is safe to ride and you enjoy and brand of bike is OK in my book (except most '80s and early 90s Huffy, Roadmaster, and Murray that pinched in dropout arrangement looks like a rolling disaster to me)
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk