It would seem that HSBT being a maintainer owner AND shopify employee faced a significant conflict of interest. Also I don’t think it’s a stretch given the context and clear direction coming from shopify for the actions of others to assume that HSBT themselves were directed by their employer to add Marty as an owner.
I sense there’s legal grounds here but can’t fully articulate what the legal case would be.
He’s one of the most active Japanese Ruby core committer, employed by ANPAD, and also part time contractor for Ruby Central, and one of the most active committers to rubygems/bundler.