The unstated reason for this change was that many of the existing Rubygems maintainers have recently quit (including their only full-time engineer) due to RC's continued relationship with DHH.
Since most of the team has walked away, RC has decided to accept a sponsorship guarantee from DHH so they can hire a new team and this is the PR spin of that decision.
I don't see how Ruby Central can be trusted anymore until its Board is publicly elected.
https://ruby.social/@rubycentral/115231365858771329