You're right that this ultimately may only be relevant in a tiny number of cases...

cookiecaper on Sept 23, 2017 | parent | context | favorite | on: Relicensing React, Jest, Flow, and Immutable.js

You're right that this ultimately may only be relevant in a tiny number of cases, but there's no reason to take the risk that your case will be one of the unlucky ones. There are plenty of good React alternatives that don't carry that risk.