Obviously, you can't build something as complex as a modern operating system without intention, and therefore an "agenda" but I have a feeling you know what OP was getting at.

I also know that the impulse to be a pedant is strong because I fight it every day, ha!

By agenda-driven, I think they mean the commercial operating systems are designed with the intention of improving the uptake of other products and services by the companies that sell them.

I think you are referencing something more like a political agenda. And Linux to some extent, GNU even more so are motivated by a political agenda: user empowerment. It is just… a good agenda.

Was going to say, the online help always baits you into using OpenJDK which doesn't work for random stuff, or in older times there was those non-default "non free" repos you needed to add if you wanted wifi to work.