How to put it through: Muse score, as well as Audacity, are disappointments to me - because they used to be open source.
Having high standard free software alternatives is great for competition, because it means you won't be surcharged for every little feature. It sets a bar for how much vendors can actually charge.
That being said, we live in a capitalist world and better this guy works on what he loves rather than doing his project part time and working some miserable dead end dev job.
I also hate PDFs, but less because of its ancient specs, and more for the fact that it's absolutely proprietary.