In your collection, when you hover over the number showing how many copies of a card you own, a pop-up displays either the phrase "trade locked" or "tradable," depending on which they are. The same feature exists in Deck Manager. However, when viewing this on cards already added to the deck, all copies are considered tradable.
The rest of the world must act as they see fit. If TPCi insists on keeping the Chat canned, that is their decision.
But that does not stop me from opposing it.
And I will oppose it forever.