'Cupcakes' is USA wording.
When I was small, we called them 'patty cakes'
They're not a 'fad'; have been around for decades', but it seems people are noticing them now for 'remembrance'! But the multiple 'flavours' available now is astounding!
And they still taste good, with a 'cuppa'!
Next best, is a fresh 'Lamington'!