Cartels do not use Bitcoin, they use Monero and Pirate Chain, your aaaarguments about Bitcoin are funny.
Bitcoin can be anonymous and can be stored off the internet in hardware wallets, transported anywhere in the world and plugged into a computer to transfer funds or withdraw from a bank into hard currency. Only the transactions into a marketplace from USD or back into USD when cashing out are traceable by back doors into Coinbase, Gemini, Binance, and such.
The government can see when you buy/sell your Bitcoin, but if you keep them bouncing around from wallet to wallet, it is anonymous, and they reason they were able to seize the Bitcoin is due to seizing the computers where the keys were stored. There is currently nobody known to the public that can hack the BTC encryption. That is why it is the most secure network in the world to transfer money.