pressure
again, this is an inexperienced politicker wanting to discuss ideas freely facing a manipulative politicking veteran looking for a debate
if you watch the stream you can see Destiny evade questions constantly, interrupt JonTron every time he says something substantiative without letting him finish, and ask loaded questions of him, because Destiny's goal was not to have an honest discussion of the issues, it was to "expose" someone he saw as an alt-right freak as a tribal because of his place in society
regardless of the circumstances, jon is a reasonable human being that came up with those words from somewhere real. his specific on-the-spot word choice might have been poor, because being put so strongly on the defensive can do that, but the broader concepts he presented were likely an accurate representation of what he believed. it's entirely possible that he's looked back and reevaluated since then, and i welcome that possibility, however you don't get backed into a corner and suddenly begin to think that certain genetic material from individuals from other parts of the world is an undesirable pollutant to the 'gene pool.'
and for the record, i don't give a personal stuff if he believes that or not, but i don't see why his thoughts shouldn't be taken for what they appear to obviously be on the surface