Comment by dotnet00

I think what they might be implying is that electronics make it very easy for teachers to rely on potentially inaccurate sources on the internet. Rather than that there aren't vetted sources that are acceptable to use (there probably are).

I somewhat tend to agree, assuming that the quality of teachers in Sweden is comparable to my own experience. In hindsight many teachers I had (especially for earlier grades) weren't likely to be better than the average rando taken off the street when it comes to vetting the material they use.

Only upon getting to university did it finally seem like the free/open source materials some professors liked to use were vetted.