If you're looking at things solely from a distributed systems perspective, sure. But I work on graphics. It'd be irresponsible for me not to embrace shared memory, where it's so essential for performance it's practically impossible to contemplate not having it. (Imagine if you couldn't have multiple fragments read from the same texture!)

We should use all the hardware resources available to us. If our programming models don't allow us to do that, then we should replace them with models that do.