The European Commission have published an interesting article disputing the possible viral effect of linking in EU law: https://joinup.ec.europa.eu/collection/eupl/news/why-viral-l...
It doesn’t practically change much for most developers, but imo it underlines a bit of the challenge of misunderstandings and the complexity around the sharp corners of open source, in particular outside of the US as most licenses were designed in the US by Americans.