Look, if people are just clicking through "I accept", I officially don't want to know about it, and the first sign of outrage by the people who now own the rights, it's off the repo. I have tried to keep things on the legal side. From there it is up to you. The same goes for the BeBasics package.
Anyway, GBP was always somewhat overrated IMHO, and while it runs in Haiku, you can tell that it needs attention. Sometimes it forms screen artefacts. Also it doesn't open newer file formats like docx or odt.