There are a bunch of proposed explanations. One of which is that it was a backup plan, just in case the pictures and videos didn't survive the radiation belt. Or, if the broadcast didn't work.

The Moon Landing was such a huge deal culturally and had cost so many resources that it would have been a huge let down if people couldn't see it.

Undisciplined

That theory is strange. Why would a gov half scam their population? They could go in full scam and save all the money invested for their own corruption.