Because such simple one-factor sentiments, even if they are true, are not how people evaluate using one thing over another. At best they might consider it in a multi-factor analysis. But with this particular sentiment it still probably won't be considered much because it's too hard to evaluate the truthiness of such a general claim -- I suspect it's more true in some cases but not so true in others. You'd be more interested in considering the specifics of language+ecosystem (not language alone) and how they relate to your problem domain.