It's not what the "parents" have done, the Population Council was founded by John D. Rockefeller III, the Tetanus/HCG anti-fertility vaccine distribution was funded by Gates directly. The idea that these families were obsessed with Eugenics in the 40's, and were sterilizing 400k Germans against their will, then in the 50's suddenly discovered that "overpopulation" is humanity's greatest threat and start sinking money into solving it is a bit too much of a stretch for me.
As far as the "evil not evil" thing, who cares? There is a pile of evidence showing that eugenics has been used to decrease populations (many times involuntary) by the same groups and families over the last century. We had FORCED STERILIZATION in the US less than 100 years ago.
The facts speak for themselves, you do not need to make value judgments on the person your sharing information with, nor Gates. Just share the information, but it will take work to absorb the necessary amount of historical context for it to become clear for you.
It's not easy to research either, these oligarchs have covered their tracks as much as possible, but isn't the future of our civilization worth it?
We didn't have the widespread internet to spread information and expose the people who orchestrated 9/11 then took our civil rights with the Patriot Act, we have a chance to stop them in their tracks this time around, but only if we put in the work and aren't afraid to offend people that have bought the mainstream narrative.