Pretty ironicly, Terms of use warn to be very careful when downloading files with an exe.,. Vbs,. Lnk,. Bat,. Sys, or a suffix com., Because these files may contain a virus or spyware !
It's a common technique used by hucksters, "here's some friendly advice ...", it's both an attempt to signal good intent and to load the mark with a subconscious sense of having been done a favour (and so needing to do a favour back to the huckster/salesman.
Not ironic: totally intentional marketing trick. It makes you more inclined to trust the provider of the warning. They seem knowledgable about something important, and they're sharing that information with you. More insidiously, it makes you less likely to apply the warning to them. Because (unconsciously you think this) why would someone warn you about a trick they themselves are trying to pull?