Not surprisingly, but importantly, COAR, the coalition of open access repositories, also supports the conclusions of the EU-Council:

https://www.coar-repositories.org/news-updates/coar-welcomes-the-council-of-eu-conclusions-on-high-quality-transparent-open-trustworthy-and-equitable-scholarly-publishing/

By now, pretty much everyone with a modicum of expertise supports these Conclusions:

https://www.consilium.europa.eu/en/press/press-releases/2023/05/23/council-calls-for-transparent-equitable-and-open-access-to-scholarly-publications/

That tells you something about the few who have voiced opposition thus far!