You’re reaching to find racism in a place where it doesn’t exist. Pretty bad faith attempt at understanding the point he was making.

Pointing to a country’s president as example of how black people are no longer underclass is akin to saying “he did it, why can’t you?”.

That's not what he's saying at all. What he's saying is "If black people are an underclass in the US, then why did a majority of them vote one of the "underclass" in as President?"

Which I think is a valid point.

Could you see an Algerian voted in as President of France?

To be extra pedantic, Barack Obama ain't a classic African-American. His dad came to America as an immigrant.

Recent migrants with black skin seem to do much better than African-Americans who ancestors have been in the US for generations. Feel free to insert your own speculations as to why.

Are you living under a rock?

Sorry if I'm being rude, but ... seriously, I would be curious how much you know about U.S. history and current events. What's your context / are you a young person / do you not watch much news, or know much history?

LOL. I'm definitely assuming that you don't live in the US otherwise you could not ever make a specious claim like "black people are not an underclass in the United States." Even the hardcore Trumpies will agree with this claim, they will just blame it on the black people themselves and say it's the consequence of poor choices rather than racism, they won't point to Barack Obama and Neil DeGrasse Tyson and say "no they're not."