Ideas shared online are just as authentic, reliable and trustworthy as ideas shared in printed books

There is really no difference in how authentic, reliable or trustworthy ideas are when they are shared only versus in printed matter. The main issue is that most readers have not mastered the level of literacy required to be able to assess the reliability of data sources.

If you are unable to ascertain the authorship / authority of an “information resource”, then that is your problem, not a problem that has to do with the source of the information. For example, if your online identity relies on the brand name of a company, then you yourself don’t really exist online. :O