Shall I begin on that? I could get something off my chest.
Before the current system existed, back in the dark old days of the 1960s, there was sometimes a risk in minority parliaments that the budget wouldn't ever get passed. It did, finally. Sometimes the estimates would be approved after the fiscal year was over. It was to avoid this that the deeming factor came in.
Now, maybe there should be a longer period between the time the estimates are introduced and the budgets are deemed passed. I would be comfortable with that. That I think is perfectly possible. But knowing what one might call the rampant partisanship in minority parliaments that we have seen in the past—not to suggest that modern MPs are like those of earlier generations, but it's perfectly possible—I think we need that deeming thing in there as a protection against just pure bloody-minded obstruction and the refusal to pass budgets in minority parliaments.