I think a lot of it comes from the increased insecurity, both socially and economically, of the age. It seems like the general sentiment of the future isn't one of hope or optimism, but anxiety and pessimism instead.

It makes sense that in a period of increased insecurity the incentives to either hold onto that security or fight for increased security holds enough value that people are willing to give up freedoms whose importance has almost become esoteric among those who have never experienced what they are meant to protect us from.

This is probably why there has been little concern expressed about the slow erosion of freedoms in western societies, or the fact that many actively advocate for them to be eroded for short term securities.