aiy - my eyes are bleeding. Yes, the red is scare mongering!
I don't see a column where they add the two, but you are right - Pentacel (as an example) contains 1500 µg aluminium phosphate and that contains 300 µg aluminium, so it would be wrong to add the two numbers for an imaginary total. Not that this would mean anything in the first place.
Yeah I had a brief twitter exchange with the author about the areas of the red circles, arguing that he is completely misrepresenting the data by scaling on a row basis, rather than a page (discrete units canonicalised) basis - which would be a lot less scary. You can guess the response.