While OpenCV was born at Intel, I don't think it's solely developed by Intel anymore, there's now a non-profit organization in charge of the project:

https://opencv.org/opencv-platinum-membership/

Yes, same impression here. I remember trying to get some documentation fixes into the codebase and felt like it all got shelved because the Intel team didn't see those things as necessary. Some community PRs/fixes just went stale like that too. Kind of now hard to merge that in my head that they now need to crowdfund.

If I remember correctly there was a team in Belarus working full time on OpenCV at one point. Anti-Russia sanctions may have killed OpenCV if this is true.

Intel offers some support, but not at the level they were before.