You're not being pretentious. :P To answer your question, it's a combination of being long winded, using unnecessary non-standard phrasing like "industrialized

You're not being pretentious. :P To answer your question, it's a combination of being long winded, using unnecessary non-standard phrasing like "industrialized-pharmaceuticals", thinking they know better than medical science/that there's a conspiracy to drug everybody so that they can't notice the conspiracy, and it all just adds up to a crackpot. In general, pretentious is when you try to make your content 'deeper' than its actual information value.