Starboard's lack of shame is both admirable and cringeworthy. They pursue these attacks like they're Carl Ichan or Steve Schwartzman, but they're nobodies with very little track record to speak of, and they don't even have a very large stake in Yahoo to begin with (1.5%).
That's not to say they cannot have a good plan or great ideas, but they haven't presented a viable plan yet, and they spend most of their efforts attacking Yahoo management with very little substance.