How are we giving them full control?
Please elaborate.
Because I believe this is not the case. What politicians can do is regulate the on ramps to the crypto space. And that has already happened in most of the cases.
Any major exchange already requests at least the simplest form of verification before you can trade Bitcoin.
Furthermore how you want to control something that is decentralized? Forbid running a full node? Forbid mining? Put the publicly known Bitcoin developers into jail?
If that happens the whole world knows that these guys are just in to save their rotten system for a few more years, before it will eventually die.
Bitcoin can not be controlled. Do more research please!