If 30% of your users hate the interface so much that they immediately leave your service, then sure, you can say "70% of our users have no problem with our strobing call to action". But that does not stop the problem - 30% of your potential revenue base is walking away, when you could retain them.

That's because they've been desensitized to it.

Unfortunately, those people are also likely to be the ones who can barely read actual text anymore, precisely because being exposed to obnoxious UI has also caused them to pay less attention overall.

I read the pie chart as this:

Only 11.5% barely notice them or can completely tune them out. 88.5% are annoyed by them with varying degrees of annoyance.

People who love flashing websites could not even participate. It looks like all the possible answers were for different levels of being annoyed.

I doubt there are many, but the result is probably skewed.

This is the tyranny of the majority.