The point is to give him a mandate ahead of the investigation.
He must know he’ll have to allow due process eventually but he’ll do it in 6 months time.
And then after the investigation concludes he’ll argue that the recall petition and by election are unnecessary because the voters have spoken 2/3 months ago.
He’s hoping to spin it out long enough that the media will discover Burnham hasn’t paid his tv licence etc.
It’s a delaying tactic in the hope something else will turn up. He might be right.
Which is why nobody should stand against him. Invalidate it now.