But, is it possible to undo any of the policies put into place? Seems like once the machinery gets implemented, everyone in government embraces it (my assumption being due to all the spending/enrichment of friends/family gov contractors).
I honestly don't know how things will (d)evolve from here. Official back-doors a.k.a. lawful intercept to encryption is an interesting twist, not a new proposal by any means but in the past this always ended up being hush-hush with small trusted inner circles of people at tech and telephony companies as they could never get such laws passed.
If this passes I suspect it will be much harder to monitor terrorist activities as terrorists will just move to self hosted or non technical solutions. That leaves us plebs to monitor and find excuses to make arrest quotas. People will need to be careful how they speak as anything that can be taken out of context will be taken out of context.
And you are right, such frameworks never go away even if they officially go away. There have been projects that have changed names so many times I can't even keep up with them. Total Information Awareness was renamed a few times. The lawful intercept code that was embedded in the firmware of all smart phones Carrier-IQ changed names a few times and last I checked it didn't even have a name any more which means people can't really talk about it.
It has been said that the worst government is the one in power, regardless of time or location. That is because they rarely teardown the bad ideas of the past.
Look to the US, regardless of the two parties, most of the time they just keep building on the pervious groups work no matter what the messaging to the people was.
"They look after number one, you ain't even number two" - Frank Zappa