You wrote you have the impression LibreOffice is "doing better". What does that mean? Have you observed what OpenOffice is doing? What is your metric? If you have not looked into both projects and if you have not tried both products you simply cannot say that. You are a victim of marketing, probably. "Doing better" is too broad to say. Even when you say "i like LO more" you can't say "doing better" in general, because both project are not really merge-able codewise and cannot be compared. You just can give your own impression, like when you say "Windows" is doing better than "OS X".
You also miss one important point before you choose for which organization you are working. The license. Apache licensed code can be used in commercial products. GPL licensed (as with LO) cannot be used without becoming Open Source itself. This is important, because OpenOffice is the one you would take when you are working on a product which needs to include for example spreadsheet features.
That all said, Open Source has different point of views, but for many of us unpaid developers it is not about marketing. It is about fun of coding. Exploring new things. Make big things happen. I even agree when you say: collaborating on code, releasing and getting users is cool to have. But: nobody needs marketing for that. I have worked on many open source projects without a "marketing division".
What you said about GNU: they do not have a no-modification copyright license.
However in this blog post I outlined that wrong marketing is doing harm to a project. Flames against projects is doing that too. Having media with an opinion when they should make up news in a mostly objective way is bad too.
Still i don't get why there is dicussion. A group of people want to do project A, a group of people want to do project B. Nobody is forced to stick with a project. Everybody can switch project like he wants. I don't get why people are so emotional with these two projects. Again: calm down, let people have their fun.