If you go deeper, his old Reddit account under a pseudonym was discovered to be a little more mask-off than his Twitter personality. From Wikipedia:
> between 2014 and 2016 Lasker had made many anti-Semitic and racist posts on Reddit under the pseudonym Faliceer.[7] In 2016, the account Faliceer self-identified as a "Jewish White Supremacist Nazi". He also wished Adolf Hitler a happy birthday, promoted eugenics and attacked interracial relationships.
https://davidbessis.substack.com/p/twins-reared-apart-do-not...
It seems more likely from these posts that Lasker is actually accurate but you can't handle true claims about IQ and race, so have unilaterally decided those must be fake because they undermines a left wing world view. But group differences in IQ are a very strong and well replicated result. There is nothing unreliable about those. Until you bring receipts we have to assume you are engaging in ad hominem for ideological reasons.
oh, wait: https://lmddgtfy.net/?q=Jordan%20Lasker