Obligatory sourcewatch link on FIRE: https://www.sourcewatch.org/index.php?title=Foundation_for_I...
If you google Arn Pearson (https://muckrack.com/arn-pearson/articles) , he exclusively, and without fail, writes nothing but anti-Republican hit pieces or about how much of a threat the right-wing is. He doesn't seem to have ever found something bad done by a Democrat that might be worth criticizing.
So this seems to be a typical Democrat non-profit where NY trust-fund nepobabies get to hang out for high salaries and lattes and the bi-weekly Republican hit piece, probably funded by similar billionaires as the Republican donations they decry.