Wikipedia has a pretty robust set of internal controls and correction policies IMO. It may not be authoritative, but it tends to be a good starting point, unless the topic is obscure etc. My brief exposure to higher education would be that yeah you don't want to let students treat Wikipedia as a primary/only source (the lazy ones have that attitude), but I wouldn't go so far as 'not reliable'.
The fundamental issue is ho do you teach people/children to synthesize different sets of information and decide what is useful and what isn't - i.e. to think for themselves? Part of that effort is also teaching them to be self aware enough to understand how their emotions or emotional issues might color their interpretation of the information, never mind evaluating the source of information first...
A lot of parents think it is a really bad idea, teaching children to think for themselves and to be self-aware...