The Right Honourable Senator is, he likes to think, a sensible and practical mage focused on practical benefits over abstract theory. But that is by comparison to his coworkers, some of whom will spend decades straight reading books of theory without leaving their labs. So when his frustration at the unreliable outcomes of certain spells intended to create breaches between the fundamental planes of reality leads to him spending three months and about ten pounds of jade testing variants, that seems downright reasonable. It's not even like he wasn't spending the time the rifts spend stabilising meeting with ministers and trying to get liches to work on things which would actually help - there are multiple archmages specialised in horticulture in the city, and *all* of them will spend their time making yet-larger monsters to attack their enemies and not, say, meddling with crop yields, if he doesn't constantly sit them down and explain to them how increased oat yields would lead to a corresponding long-term advantage in the quantity of fertile land and number of dead bodies they can use for their experiments. His contribution credit system keeps getting voted down in the senate by lazy liches who want to retain their full share of the research budget but he can still assign better lab space and more-talented assistants to people who're actually helping, at the cost of a constant mental burden tracking who is actually helping and what rewards he can funnel to them.
So when one of the rifts suddenly expands to tenfold it's expected size and scatters the entire ritual ground, including him, across the multiverse, he's distracted for a moment too long to respond in a timely manner.