She's not talking about class changes here -- those are more permanent changes that affect the basic rules of the game. But specifically with temporary events (I'd even throw the Brewfest controversies, and the Headless Horseman complaints in the mix), players sometimes have reactions that are way out of proportion to the events themselves. These holidays and world events are temporary: shouldn't we just enjoy them while we can?
It's definitely a valid point, and something to remember for the next time a temporary event throws off your usual routine in-game. The fact is that we players are spoiled -- Blizzard generally does a great job keeping this game fun, and so when even a little issue sneaks into the game during a temporary event. But Larisa promises that next time she gets shaken up by a temporary change, she'll give it another chance. Sounds like a great idea to me.