Can someone explain what this means? Am not familiar with the terminology

Google uses libraries licensed under GPLv2 in Android (I’m not sure which specific part of Android the author is talking about), and so is required to make the full source code available for anyone to view. They previously used to publish a tarball of git tags, but now require you to fill out a Google form and then (weeks later) will share the source with you on Google Drive.

Google apparently wants everybody to know how much they hate abiding by the terms of open source licenses.