Of course the main reason that people are reacting oddly is because they are scared of him. Sizemore has gone from someone who makes paths and shapes gardens to being able to detonate entire hexes and croak all those within.
That, and he is involved revolutions of Erf-shaking proportions, new magics, almost heretical in nature, are secondary compared to the sociopolitical and religious facet of GK's ascension.
The question which was bugging me so far after this update - is there some sort of "code of conduct". What happens if one caster is responsible for others death? He's outcasted at MK? Nothing happens at all, etc.
They are all barbarians. But somehow there should be rules too. Itching to know more about MK.
War and, by extension, death are constants in Erf. Casters who leave the MK do die, and this must occasionally happen at the hands or partially due to the actions of other casters. I'm sure that they understand that "business is business." And the business of Erf, to steal a phrase, is War.