Got a response from them:
Dear Sir or Madam,
Thank you for your recent inquiry.
The file is riskware and the detection could be renamed to SPR/BitcomMiner.A. The new detection will be available with one of the next VDF updates.
For further questions don't hesitate to contact us.
Good deal. That's legitimate, companies and people should be made aware that such software is on their computer (if they aren't already), and there is potential risk involved with the software (potential legal liability or electrical costs, for instance). So long as it isn't flagged as a trojan or other malware, another AV company is getting it right. Hopefully the AV software in question has the option to not detect riskware (as they call it, every company has their own categories) and/or the option to specifically allow that risk (via definition instead as opposed to exclusion).