I doubt they have capable programmers working for them. A few years ago the Chaos Computer Club discovered the 'predecessor' version of this State-Trojan ("Bundestrojaner"). This version was a perfect example what happens when you _want_ to have such a software but your programmers _suck_ at even most basic things (like establishing a working traffic-encryption).
Here's the video (in German): https://youtu.be/zAV-hTpperU
We shouldn't fear their 'capabilities' but rather their lack of knowledge that'll ultimately lead to 'open systems' which can later be exploited by other criminals.
In fact, our State (I'm from Germany) supports criminal activities by using a crappy software that'll crack the basic security measures of Windows.
I doubt they have any professional Linux programmers working for them. Working for the State also means earning only a fraction of what you can earn in the free market.
I do not fear the State but criminals who'll sooner or later exploit holes created by our "security agencies".