Posts like the one to which you replied are a classic example of what is wrong with this forum.
Far too often (almost always, to be frank), discussions dissolve into fans from opposing teams bickering amongst each other and making comments that are far from factual and almost always based on emotion. It is really too bad, because there are some insightful, valuable, and positive comments inter-mixed into the discussion, but those comments are overshadowed by the far more common posts containing nonsense and rhetoric.
It was extremely obvious at the time that the Flyers signed Gostisbehere to a bargain contract, and it looked even better the year after he signed the contract. Any person who says otherwise is either ignoring the facts or simply making the comments to stir up the conversation. I know it won't ever happen on this site, but it is usually best just to ignore such uninformed comments that add nothing of value to the conversation.
And I say this as a non-Flyers fan. I just love the game of hockey and enjoy positive debate/discussion. Unfortunately, most of the conversations on this site, even if they start off on a positive note, eventually become pointless with numerous comments similar to the one to which you responded.