They stopped making the Hull and the Decks. The Engines are Mercruiser. All the parts on the boat except the deck and hull are 3rd party products. Boats aren't like cars. The fact that they no longer make them is irrelevant. They are made by Brunswick, which makes Searay and BAyliner, Mercury and Mercruiser. That company is still the largest recreational boat manufacturer in the world.
All parts can be easily replaced. Fiberglass guys fix the deck and hull anyway. The fact that they no longer manufacture under this brand should not be a significant factor.
If the boat looks solid and you like the price, hire a surveyor to do a full survey. Make sure that includes a sea trial and engine survey.