Don't you think your prejudice against cryptocurrency is clouding your judgement here?
Keybase is an identity tool and it makes every sense for it to make a wallet. Also, you provided no reasons that being involved in cryptocurrency will undermine keybase's security. Do you think?
The main problem is that dealing with money has all sorts of legal implications for businesses.
By adding cryptocurrency to a communication/identity client, a jurisdiction will probably classify your business as a money transmitter, financial institution, and/or stock broker. After reclassifying your business, they then fine you into the stone age for not registering and following all of the laws associated with that status. While technically, it might be no different than handling money via your bank, the law has not caught up with that yet in quite a few jurisdictions.
Don't you think your prejudice against cryptocurrency is clouding your judgement here?
Keybase is an identity tool and it makes every sense for it to make a wallet. Also, you provided no reasons that being involved in cryptocurrency will undermine keybase's security. Do you think?