I thought the forum had by now outgrown that sort of silly blanket statements. It's a statement made in denial of the very fine music played on these whistles and the opinion held by many whistleplayers that for ease of playing and tone you still have to look at Generation (type) whistles. But, to get a reasonable appreciation of what these whistles offer, you need to be able to play. They are the quintessential simple, cheap and accessible instrument, well able for great music.I've found that most of the five dollar whistles sound like five dollar whistles: screechy, wildly imbalanced in air requirements, and usually so out of tune to put anyone off listening to them.
The argument that a fine player can make music on a sub par instrument that is always trotted out in this sort of discussions, doesn't fly. It does not make sense, it bears no scrutiny. Good musicians are pragmatic, they will play what is best for the job. They will not get up on stage with an instrument that works against them. Musicians who use cheap whistles don't do it out of some sense of masochism. They do it because the cheap whistle is handy and does what it should do with ease and agility.
I said earlier on this thread, there's horses for courses and for Irish music, the Generation type cheap whistles, mass produced whistles with injection moulded heads, haven't gone away by a long shot. They exist comfortably alongside some newer designs, that often enough try to reproduce the aesthetic set by the cheap whistles, but at a price.