Good news! Minereum team kept their words.
They implemented a feature which enables the users to destroy their 32000 MNE (level 1 genesis address) with no hidden fee other than Ethereum gas fee.
For those who want to get rid of Minereum, no bother, you can freely burn them now. OH YEAH!
Warning: The following tutorial will guide you to destroy your Minereum Genesis Address Level 1 with 32,000 MNE (received from the airdrop). Once you destroy your genesis address, all the MNE tokens will be burned forever. Make sure you only use this option if you are sure what you are doing.
Tutorial:
1) On PC, login with your Genesis Address on Metamask
2. Go to this page https://etherscan.io/address/0x3cb9b69ab8df85d822345af9df48f30d931b32a2#writeContract
3. Click on "Connect to Web 3" (use your Genesis Address)
4. After connected, locate the function 1. DestroyGenesisAddressLevel1, click write and wait for the transaction to confirm.
5. After that, your Genesis Address will be destroyed and your balance will be removed.
This is my txn hash: 0x4490d60ca1ff438ab07e1ed3dc4a11c46337e3766e6d3a461b0b707adfd3543e
Link: https://etherscan.io/tx/0x4490d60ca1ff438ab07e1ed3dc4a11c46337e3766e6d3a461b0b707adfd3543e
And now, 32000 MNE was gone.