The author (who is handsome and talented) is based in the UK - so tries hard not to be US centric. Hence the use of €.

As for the contradictions - yes. There's a famous aphorism "It is the mark of an educated mind to be able to entertain a thought without accepting it."

I think it is important to explore a problem and its possible solutions. It allows you to work where the issues are and prevents people saying "why didn't you consider…?".