On the other hand, the interior minister himself has no clue, as well as all the politicians in the assemblée. This is where the double-bluff is from. (granted, I think Darmanain was an exception)
We have to remember that, while the minister changes with the government and thus is by definition a politician (seriously, look at some of our ministries, they go from education to health taking a trip by ecology with a pit stop in finance), the ministries themselves are made of people that mostly stay in place and are not affected by government changes. Those are the ones making the calls. And those precisely know what they're doing (thing DGSI and DGSE).
No, the career specialists in the ministries are the ones writing the reports and developing options. Ministers, in France and other democracies, bring their own staffs of experts. Those will work out a recommendation. The minister -- or more broadly speaking the politician -- makes the call.
And frankly, I don't know of another way. Nobody can be an expert on all the things that come up in a single ministry, let alone the parliament.
This is a known and accepted flaw of rotating leadership in democracies.
In other words they’re fine with intruding upon citizens privacy - this doesn’t require any understanding of encryption I think ( and if encryption prevents that, their answer would be ‘ban encryption’)
I’d say that the problem isn’t so much related to encryption, but to the fact that anything digital can be industrialized very quickly, and that the ‘if it goes wrong’ scenario can go really wrong if ( and when) your backdoor falls into the wrong hands.
From a lawmaker’s perspective, it’s just a different kind of risk, which they may or may not be assessing properly. In some ways I see it as closer to people misunderstanding how easy and how bad it is to lose large amounts of data : it’s not related to the inner workings of computers , but rather to the leverage that computers provide. The same is true with weak crypto : everything is great until suddenly everything is in the clear all at the same time, and read by people you don’t want.