Which current board members were there during the earlier drama that Dorsey is referencing? There are probably just a few that he’s really talking about, the rest are just a rotating cast.
https://en.wikipedia.org/w/index.php?title=Template:Twitter_...
for example this revision in 2012 is the first I can find referencing board members:
https://en.wikipedia.org/w/index.php?title=Template:Twitter_...
not 100% authoritative but it's a good clue.