because your data isn't going to analyze itself!
yt is free and libre open source software, and will not require non-free and libre open source software to run.
YT will not have any official secret branches or features: all contributed features will be shared with the entire YT userbase after they have been tested.
If you do research or publish papers using YT, we offer public hosting space for your scripts and additions to the codebase.
We are committed to open science: that methods, data, and analysis scripts should be made public at publication time. Using YT does not bind you to these ideals. You are free to make all the personal, secret additions you want in private repositories located deep within mountain bunkers.