Everyone on these forums walks the line between enthusiasm and endorsement.
Unless someone is proven to be selling, or having received the product(s)in question for free or at some special accomodation pricing, let's give them the benefit of the doubt, that they're excited about what they hear, and ask questions to qualify the improvements they're reporting.
Attacking without first hand knowledge of the product's performance, IMO, should also be subject to both criticism and skepticism.