Poll is biased, as usual. There is no "it's fine", only enthusiasm, disagreement, and indecision. I need an acceptance option.
Frankly, I'm surprised how nobody is talking about one of the most critical gameplay consequences of the Leader pool: they help you pick a Civ pathway. In that sense, they need to prioritize Leaders who give you multiple options of Civ choices. This makes Ancient Leaders less likely to be useful, and means that people who were important to multiple cultures, regions, or nations (which are thus less likely to rise to *rule* one specific culture/region/nation) have higher priority than they normally would.
Ben Franklin, while born and raised in the colonies, was himself a minister to multiple European countries and born to a father who left England, which Firaxis may use to give him ties to other Civs than America.
Harriet Tubman has close ancestral ties to Africa (though unfortunately we don't know exactly where her grandmother was enslaved from, but presumably West Sub-Saharan), which enables Firaxis to give her ties to other Civs than America.
Tecumseh can be connected to multiple native tribes through his confederacy, and importantly that also gives selection options for Civs from an entirely different game Era than America.
Lafayette was a critical figure in both the American and French Revolutions, enabling him to lead into both.
Napoleon is the French leader, in this context, but he's bonus content.
Charlemagne can lead into most Western European Civs, and I think I'd only call him "French" if I were stretching the definition to be angry on purpose.
In addition to leading into multiple Civs, it is also important that Civ7 Leaders seem reasonable leading any Civ. So if they were a ruler, they will need to be one that did rule multiple cultures/regions/nations (which are rarer than one might think), or they need to be important for other things that could have happened elsewhere in alternate timelines.
Franklin was a Renaissance Man, and had he been elsewhere maybe he would've simply leaned into one of his talents more than the rest. He can lead any Civ.
Harriet Tubman fought for human rights, against oppression by a different culture. She can fit anywhere.
Tecumseh fought for independence, against oppression by a different culture. He can fit anywhere.
Lafayette was a proponent of Enlightenment ideals that could have taken hold anywhere.
Napoleon pushed those ideals onto many other cultures by taking advantage of a political situation in a powerhouse civ. He can fit anywhere.
Charlemagne established the Holy Roman Empire, which crosses the boundaries of multiple traditional Civs. He can fit anywhere.
So I'm not really viewing this as "3 American and 3 French leaders", I'm viewing this as multiple leaders who have multiple options, and that's important for the gameplay.