I don’t think the geopolitical issues directly affect ISS operational stuff whatsoever. The missions of the Roscosmos and NASA (and ESA and JAXA and CSA) teams have nothing to do with nationalism or geopolitics and I assume everyone managing them and participating in them is smart enough to realize that.

They didn’t fuck with NASA when Dubya invaded a country, after all. Every spacefaring superpower has its fingers in a bunch of mass murder pies somewhere.

There is no geopolitical upside to Russia or geopolitical downside to the US for NASA to contract Roscosmos to rescue some Americans from space. I imagine SpaceX was just faster and cheaper and already had a mission scheduled.