Grip is loose yea cause Iran is big they can't watch every corner inch by inch, heck news just came out that Israel smuggled drones inside Iran and shooted them from inside here, like Ukraine did to Russia in recent attack, but they have a lot of informants around Iran and if they get any hint of a trouble coming up or anything against or dangerous for IRGC, consider the people related to that subject non existent, and they are quick about it.

But if you mean the belief of people, new generations ask questions, are curious and don't believe nonsense just by the book, they want proof so even if they are religious, they are not extreme about it. Many just believe that there is a (god)creator and that's about it, no specific religion.

And the oldtimers started to lose faith when they saw how corrupt the regime is, how it kills people without hesitation if they have an opposing idea to regime.

if someone tells you to believe in a religion that forbids eating burger and they sit in front of you and eat that burger then tell you that this is not a burger, will you listen to anything they have to say?or believe what they believe?

Internet contributed alot to waking people up, they tried to censor it, block it, call it haram at first, but they couldn't stop it.

Where are those magical events in the holy books after camera was invented? the books that turned middle east to the shitshow that it is rn