What I want to achieve

I want to connect with my API keys to several providers. I use this code:

export const provider = ethers.getDefaultProvider(NETWORK, {
  etherscan: ETHERSCAN_API_TOKEN,
  infura: { applicationId: INFURA_PROJECT_ID, applicationSecretKey: INFURA_SECRET_KEY },
  pocket: { applicationId: POCKET_PORTAL_ID, applicationSecretKey: POCKET_SECRET_KEY },
});

Problem

When I log out the variable, I get this:

 providerConfigs: [
    {
      provider: [InfuraProvider],
      weight: 1,
      stallTimeout: 2000,
      priority: 1
    },
    {
      provider: [EtherscanProvider],
      weight: 1,
      stallTimeout: 750,
      priority: 1
    },
    {
      provider: [AlchemyProvider],
      weight: 1,
      stallTimeout: 2000,
      priority: 1
    }
  ],

So the pocket key was ignored and the AlchemyProvider comes out of nowhere, which makes me think that this way does not work. Is there another one?