Nah, they won't ban it, it's just another area they can tax and add to gdp when they need to
But why they need to collect tax from bitcoin? What they are going to do with that coin? And i think they can't added to their gdp because they not own it and its decentralized.
They don't need it, they just want it. They want everything.
Actually of course they need bitcoin,but in other way,they're gonna collect the tax from bitcoin company not in bitcoin but in fiat thats it always they did it,its a little secret why the goverment not ban it,they are already let bitcoin grow but not ban it coz they really need bitcoin

If they need it, why they not published or tell it to their people what is bitcoin and they can use it as a payment. If they do that they can get more bitcoin.