/flaming suit on
I dont care what that post says, cant even open it at work. From close to a 500hrs spent on the game I know what the reality is from my own experience. Im happy to accept that it contradicts what i think and have experienced myself
You should care, unless you dont want good gear.
The link shows that when an item drops the following happens (in order)
Rolls for the item to be a legend
If not, rolls to be a 6 affix rare
If not, rolls to be a 5 affix rare
etc until it reaches the end of the line and you get a white item
So since the roll for a legend is first in the queue, it gets the most direct impact from MF, and therefore legends drops will scale exactly linearly with MF. What it also implies is that less white and blues will drop, since the chance for a successful roll higher up in the chain is greater.
Now sure, you could gear for GF instead. In which case I'll take your lifetime kills of roughly 180k. How many of them drop gold? I'd estimate 1 in 4 (probably less). And how much gold do they drop? I feel like 3000 gold on average is a good number (for someone at nearly max GF). So, assuming you are at max GF since your first kill, you would have roughly 135mil... Not that much at all really wouldnt you say? Whereas if you had gone for max MF, on average, a player with your amount of kills would have had around 400 legends (using accepted legend drop rates), nevermind all the 5 and 6 affix yellows. This will almost certainly give you a much better return