Nope, that's not what it means at all
Genetically linked behaviors follow distribution curves. There is always variation in every population for any behavior. When a behavior is highly selected for, alternative behaviors become more rare...but they still happen.
A good example of this is homosexuality, evolutionarily speaking this behavior is highly selected against (reduced babies). It still occurs in all sorts of species.
What this means is that around 2/3rds of humans are strictly monogamous. Around 1/3rd of humans are promiscuous or partially promiscuous. These are instinctual behaviors that can be overcome somewhat by cultural norms. On an individual basis, for every 3 people you meet, one instinctually finds sleeping around to be their "normal" behavior.
Hydroponic greenhouses in the late 1970's for one bankruptcy. Off a deep well on a high mountain valley with water that came out of the ground at 6-8C.... Oh and brutally cold winters down to -30C The heating cost alone for the water was prohibitive. They blamed the Mexicans for "tanking the market" for that bankruptcy.
On the other side, they always chased last year's market. Sugarbeets were high so they doubled their acres - bank forced sale of 300 on that one. Beef was high so they bought steers ar extremely high prices and then sold them at a loss.. bank forced the sale of another 400 acres plus they lost their grazing contract. The last one was lamas. Yep they bought 100 of them.... Somehow it was the blacks fault for that one.. never did quite figure out how. I currently guess the bank got a new loan manager who happened to have a darker skin color.