Rather, I pointed out that they have a real mission, and they’re going to spend effort accomplishing it. But their mission isn’t to own every device — it’s to own a select few, probably on the order of hundreds or thousands a year. So, if we create a mechanism by which they can do that without owning every device, we can align our goal of protecting most devices with theirs of owning a few.
This in turn increases security for nearly everyone, because powerful agencies no longer have the same motivation to cause harm — and might be persuaded to help. After all, it’s in their interest to prevent large remote compromises — just not a higher priority than maintaining their own access.
Further, the best way to actually restrain them is through a change in government policy, which will only happen when the government believes there’s an alternative solution.
Perhaps you could try responding to the point?