Exactly.
Like the traject speed check on the A4 between The Hague and Leiden.
It is a 6 lane highway with on one side a very big lake and on the right side nothing but polders. No city, no buildings, nothing that can justify a traject speed check. Also nothing that can explain why the limit there is 100 instead of 120 or 130 like it is on other places where there are MORE buildings/towns....
And of course THAT is one of the spots where they install such a system. Because they know that the road invites to higher speeds than 100......
That's the whole point....they don't care shit about safety, it's money milking.