Some people can get away with self-initiated emissions (SIE) and some cannot. Some people know it's wrong because in some way it makes them unhappy.
Some people let society dictate what's right and wrong...they don't have their own light or don't have the guts to try.
A true Vajrayana practioner on the path, (completion stage) purifies his or her desires to the point where SIE becomes a foreign idea.
A buddha is pure...the defilement of desire has become one of the 5 wisdoms. The Buddha shouldn't have to state whether or not you can or cannot SIE. Because to become a Buddha is should be obvious you will not need SIE.
I don't understand why it has to be told or written down by the Buddha???
So I think for most SIE is okay but if one is looking at higher levels, toward the path of realization, one will have to engage in higher levels of purity.
To study and read high level Buddhism does not make me a high level practioner. As greentara pointed out, I can't expect to read 100 books on Tantra and call myself a realized being.
Most here don't really care about enlightenment and that's fine.
But people do take merit way too lightly and then they wonder why they achieve no results.
Common sense and logic is a human gift that too many people waste. True intelligence begins in logic.
Most people overthink and they call that intelligence...they forget the K.I.S.S. principle. And when somebody points it out to them then they say ohhhh yeaaaa.....
So that is all I wanted to say.