Does the end of the universe provide paradox protection?

[senko]

I'm rewatching through the series (as you may have noticed from my posts) and something in the big bang just occured to me. Amy steps out of the pandorica and touches her younger self several times (flipping her hair, pushing her behind herself) and no reapers show up as a result of it unlike happened when Rose held her baby self. Same with the doctor holding his dying body. So I find myself wondering does the end of the universe provide paradox protection or is there something else going on that prevents major issues (such as this not being where time has just received a nasty jolt from saving someone who was meant to die)?

[Catsmate]

Presumably in the collapsing, nearly dead universe the Blinovitch Limitation Effect didn't exist.

[misterharry]

The Reapers were already present in the dead-end timeline created when Rose saved her father from being killed by the car. Her touching her baby self merely attracted the Reapers to her and made them stronger.

As for the Blinovitch Limitation Effect, I'd agree with Catsmate.