It's been done before, and it's pretty frightening.
I wish I had the exact number, but I believe following Patrick's advice adds approximately 1.5-2% to the house edge, which is anywhere from tripling to pentupling it.
As mentioned, the real irony is that his "conservative strategy" actually has higher standard deviation because of all the lost EV, not to mention his hair-brained five-splitting stuff.
As an example, if you have AA v A on the first hand of a 6 deck, S17 game, and the dealer does not have a natural, if you split, you will win an amount equal to about 12.7% of your initial bet. If you just hit, you actually LOSE an amount equal to approximately 2.2% of your initial bet. That's nearly a 15% swing! So, with a $10 bet, not splitting is like throwing $1.50 away. Against a ten, this figure is almost $2.50.