BoudDecidim's announcement has a full English version [1].
"Democratic infrastructure cannot be proprietary: A statement on #OpenSourcePolitics' acquisition"
"... we wish to express our concern regarding #OSP’s decision to abandon the principles of transparency and openness inherent in free/libre open-source software (FLOSS). It is important to clarify that #GoVocal is proprietary-closed software; it is not even Open Core, as they once tried to claim."