Yes, but what other plausible way do we have for getting rid of bad patents? The problem is that those "defensive" patents are all bogus too. If the bad patents are ever going to stop, there has to be a transition period where some of the old ones are still valid (although they can be invalidated over time), but new ones aren't being granted (or realistically, not being granted at the same rate as they were in the past).

Given that it has to happen some time, let's start right now.