They will - if/when it becomes 'allowed' to import such products into, and sell them in, the UK (with fitted BS1363 plugs).
However, that will be totally reasonable from the perspective of those buying and using them, won't it? The vast number of buyers/users would know absolutely nothing of "circuits never designed for" certain uses and, unless I'm missing something, I think it would be totally unprecedented for the sale of something in the UK (with a fitted BS1363 plug) to be allowed if that something had the potential to cause harm to a (satisfactorily designed and constructed) circuit it is plugged into, wouldn't it?
What surprises me is that we appear to be on the brink of crossing the line and creating that hitherto 'totally unprecedented' situation.
