I deducted this statement from some writings about the History of Concertina, and most of these texts explained that the Anglo became the favorite instrument for blue-collar workers because they were much more affordable and very easy to learn. Lachanel improved their production technology and they sold tens of thousands of affordable Anglos. The English remained the instrument of the higher classes. This may also explain why Irish traditional musicians used the Anglo. In today's Suttner price catalog an English is 1500 euros more expensive than an Anglo (basic model). It's highly probable that I misunderstood these stories.