Hello, I don't think FSF has the capacity to provide perfect accessibility for all GNU software and conferences it runs. I believe they are willing to make improvements in this direction, *infrastructure*-wise. As far as I know, *content* - keynotes, transcripts, software, software documentation - is provided by volunteers. I hope my understanding is correct. (This is how Wikimedia Foundation does it. I presume it is also true for what FSF does. I haven't seen it documented as an official policy.)
For example, I checked about Libreplanet, turns out that the videos subtitles are written by volunteers here https://libreplanet.org/wiki/LibrePlanet:Conference/2020/Transcripts - and the FSF wrote to me that they will consider improvements to the process to make it easier to discover and to use, so that the transcription does not take so many years. If there is anything in GNU Savannah that causes it to lack accessibility, please let someone know, as it is a piece of infrastructure hosted by FSF, and improvements are possible. Similarly, the page 'repo evaluation criteria' is written by volunteers to a large extent. If you have a list of specific "awesome accessibility" points that you think should be added as criteria, I expect that they would probably be considered here. Thanks, S