Notation for composite functions

From seeing my children’s school work, it looks as if GCSE maths in the UK uses what looks to me to be confusing notation for composite functions. Essentially they write fg where I would write f \circ g. For an example, see the BBC web page

https://www.bbc.com/bitesize/guides/z36vcj6/revision/6

To be precise, they write things like fg(4)=f(g(4)).

Surely this can cause confusion with the pointwise product function fg given by x \mapsto f(x) g(x)?

I suppose that f \circ g might look weird and frightening?

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