On a related matter, are people not taught to assess reliability and interpretation of information at all? It would be a useful part of GCSE English, Maths and Science for a start.
Which are 'good' sources of information, which have a fairly obvious hirearchy, ie official sources like gov.uk, regulators and the energy suppliers, followed by well regarded media and consumer sites like the BBC and Moneysaving Expert, then tabloids and social media where the tabloids liberal use of 'could', 'is thought to' and 'may' effectively make whatever is written fairly meaningless unless corroborated by a source further up the hirearchy, so comprehension of what is actually written down.
Forums and social media are obviously unreliable as people can write anything, especially when anonymous, so it can't be the case that people 'get most of their news' from there. 'I read it on social media' but never bothered to check it out properly myself, well more fool you.
Maths and science can obviously crunch the numbers but also teach people to ask more questions and check the validity of the data.
'The price cap is £X'
How is this worked out?
How do the usage figures compare to my situation?
If my use is above average, why is this and what can I do to improve?