World of Warcraft Classic is getting the Token with which the players can pay the subscription but it's currently limited to China. It also caused a scare about the in-game economy, in case it arrives to the western markets.
Blizzard's launch of World of Warcraft Classic was one of the rare wins for the company in recent years, which have been filled with controversies and outright terrible moves that alienated the fan base. The latest news about Classic may scare some of the fans as well but it's important to remember this might end up just being a scare and not something bad that is guaranteed to happen.
Namely, World of Warcraft Classic is getting the Token system which the players can use to purchase monthly subscription to the game. The reason why the fans might be reluctant to have it in Classic is that the Tokens can be purchased for real life currency and sold on Auction House for in-game monetary gain.
Combined with the fact that those who enjoy WoW Classic are in it for the feeling of enjoying the game as it used to be back in the glory days of vanilla, The Burning Crusade and Wrath of the Lich King, having the Tokens appear and ruin in-game economy would be disastrous.
However, the Tokens have been announced only for China and since the region has its own client, it will not directly interfere with the experience of the western players. At the time of writing, Blizzard did not confirm nor deny the potential possibility of adding Token to WoW Classic in other regions and considering that the players are highly unlikely to enjoy its addition in the west, there is still a chance the company will not go down this road.
Therefore, panicking at this time would be somewhat unsubstantiated but expressing dissatisfaction with hypothetical addition of Token could prove to be important feedback for Blizzard.