there's thousands of devs/staff at blizzard, not just the handful that interact with the public.
say this is the issue that makes you want to walk out. you'd have to accept that this might mean losing not only your dream job, but a job full-stop - games is a very competitive industry and you might have a long period of unemployment.
this would have to be a "I would give up my career in the games industry for this" issue. it is for some. it's not for others.
All customers can do is boycott and protest. Nothing else will cause any change in behavior. Unfortunately, employees will be hurt in the process.
Wouldn't it be better for employees to stage a big moment now, force Blizzard to backpedal, and resume being a game company sooner? A long, drawn out thing is worse for everyone.
keep working, hope that blizzard reverses course.
this is the first seriously backwards move in 30 years of the company afaik. quitting immediately isn't the answer to your average employee.
and please reread what I wrote. I know many blizzard employees. as much as it hurts them to see what their company did, quitting simply can't be an option to them. not in a massive immediate show of support. not everyone can afford to be political.