Sure. You can think so. Everyone has opinions.
It doesn't change that how something is named is a choice, and one that has many consequences. The one they are trying to avoid this time is having to revise all the Adventures and obsoleting the supply (whereas that time, obsoleting the supply was part of their reasoning for doing it).
Which one is more of a marketing cash grab? I would argue 3.5. You would disagree. Our opinions have even weight (though I work in selling D&D books whereas you don't care if they sell, you just want them to be done your way).