alt Hacker NewsWe’re not discussing the total population of the Earth. The thing about words is that their meaning may depend on context.
If we were discussing everyone who has lived and will ever live, the current population of the world would be a limited snapshot. Same if we were discussing every planet and civilisation in the fictional world of Start Trek.
But we’re not discussing that. Making up something we’re not talking about to attack what we are is called a straw man argument.
And for the purposes of the stated goal, for one person or even a company to get 50K people to switch from Facebook or to use another platform especially when all someone else has to do is start a group on Facebook, might as well be “the number of people on earth” difficult.