Damn, very impolite implementation - something that BOINC project admins have opposed in the past, it's a shame that my BOINC PR isn't getting much attention: https://github.com/BOINC/boinc/pull/2134
In fact, monetizing historical RAC makes WCG & other BOINC projects a target for malicious actors - unfair to impose this just for a distribution :/
Actually, the long term target of Byteball is not to monetize WCG contributions. It is actually a payment platform, and their tokens (BYTES) are used to pay for the fees and reward users that are confirming the transactions. Part of the roll out strategy, they decided to distribute 99% of all the BYTES, and they started to get inventive about how to distribute free coins. They have several ways to distribute, and one of them is to reward WCG users, including for historical contribution.