Edit January 19: FLI has made a substantive statement about this issue:
https://futureoflife.org/rejection_statement/
This seems concerning. It is claimed that the Future of Life Institute, run by MIT professor Max Tegmark, offered but did not pay out a grant to a Swedish far-right foundation. The character of this foundation and its associates is well-known in Sweden. Expo is an old and respected watchdog organization specialized on neo-nazism and related movements.
https://expo.se/2023/01/elon-musk-funded-nonprofit-run-mit-professor-offered-finance-swedish-pro-nazi-group
Not being paid for it doesn't make it okay. They still promote holocaust revisionism, vaccine denialism, and the white replacement conspiracy theory. One could make the argument that it actually makes it worse: he believed in the cause so much he was willing to work for free. (I'm personally agnostic as to whether it makes it worse or not, but again, it doesn't make it okay)
The fact that this reply has positive karma and positive agreement karma is baffling.