The urgency isn't even in block size or scalability. The urgency is in fixing the goddamn decision-making process among the core devs. You think Hearn was wrong about that?
From an objective standpoint, looking at Hearn's contributions as a whole (the database change that caused the first fork, the redlisting coins proposal, and XT in particular) I think one could come to the logical conclusion that Hearn has been compromised by the NSA or some other three letter agency, likely recruited while he was still with Google.