I'm still struggling to understand the "why."
(That's not an implicit criticism of the article, which is extremely appreciated because it's neutral and factual)
I've been away from Ruby for a few years but Shopify always seemed like a huge net positive, sponsoring lots of valuable work on both Ruby and Rails. I never followed Ruby community happenings very closely but I'm not aware of negative feelings towards their community role in the past.
Apparently, the reason is having an incorrect opinion.
DHH stopped trying to cultivate an inclusive community some time ago. The ruby community can ill afford to drive away more prominent maintainers, yet that is what is happening here, as the corporate interests are aligned with DHH even if the rest of the community is not.