That guide is a beast, and it even has how to use the 500 address staking technique.

Is this a parody?
What kind of pinhead would stake a 6% coin which is basically a rounding error in crypto?
So the 500 address thing "increases staking" but no further information? What fun.
If so, then this is a straight up scam in the DNR code and needs to be exposed.
PoS is 6%, the actual code for the reward is posted in the OP.
nCoinAge * 0.06 / 365;
You can split up your inputs into multiple inputs and then gain CoinAge on those inputs separately so that you in turn stake more, the reward is still 6%. Nothing wrong with that.
Also typically when you solve/find a PoS block some of your inputs are generally combined