Moving will be made to interrupt spellcasting at a point in time...

[Jennestia]

I can't believe people actually fell for that BS explanation..

There's a difference between "falling for a BS explanation" and personally not liking it -- What category you fall into is personally not liking it because it's very obvious he's thinking of the overall game, after all he's the director and producer of it, he knows the plans for the future, you do not.

Imposing movement restriction on Mages for the benefit of PvP combat is messing with PvE.

You clearly didn't read the post then and likely stopped when you seen "PvP" -- It's not a change purely for PvP.