If I were Larry/Sergei/Schmidt, I'd vote against it too, just because I get annoyed when random shareholders try to tell me what to do with my company. When I first read this in a different context, it was worded so that the shareholders who weren't otherwise involved in the company brought up this proposal to force the company to do this stuff. IMO, even if I were going to follow the general intent of the proposal, I wouldn't want these random people who bought a bunch of stock to start snooping over my shoulder all the time.

Furthermore, the measure seems likely to prevent the governments of said countries from allowing Google into them at all. It is debatable whether having a censored Google or no Google is better for oppressed peoples.