The only scam would be if this person didn't have such an obvious connection with Ctec (username is pretty obvious) and continually plugs the Ctek brand in threads or bombarded posts with plugs for their products.
It's good when businesses are open about their affiliation or involvement with products, and are also willing to give advice about products without plugging their own brands blatantly.
I'm a firm believer that businesses involved on the forum, should have some mention of the fact in their signature, or as in this case an obvious reference to the products involved in their user name.