Ooh... Car analogies. Here's one:
Imagine you went to a car dealer and the salesman told you nothing but wonderful things about a certain model and got you interested in buying it. You tell the salesman you want to go home and do some research on the car. The salesman warns you not to research it online, only read reviews of the car written by the car's manufacturer, and - for the love of God - don't listen to any former owners of the car because they're all batshit crazy and demonic. What is the likelihood of that car salesman being honest about his assessment of the car?