I can't confirm the IBM infographic other than taking BOINCStats again:
May.2013 - 405,982 users of which 72,522 active, generating a RAC output of 117M
May.2018 - 541,928 users of which 50,138 active, generating a RAC output of 134M
Taking these numbers a side, WCG has achieved a lot in the last 5 years and I believe this is what we should focus on!