If you're referring to the people who don't like the beta and will not play anymore, I think you're right. Regardless of what WIS does some people will leave. The quality of the product will dictate how many that it.
It's a pretty simple rule but the 10-80-10 rule probably applies here:
10% of the users will ***** and moan and/or quit if there is any change
10% of the users will play and pay no matter what you do
80% of the users will try out the new product and if they like it continue to play and if not, bail. The reasonable goal for WIS is to make a product so good it keeps as many of the 80% as it can.
If you're referring to your personal high horse, then yes, I would be surprised if anyone is up there with you.