Racism is not strictly political unless you assume one party is pro-equality and the other pro-white nationalism.
Laura Ingraham’s long history of reciting white nationalist talking points is well documented.
Is Sea Otter about mountain biking? Then yes, it’s sponsors are a valid topic for a mountain biking forum. In the specific case of Sea Otter being at Laguna Seca I’m not sure that’s totally relevant. Weathertech does not own the facility and doesn’t get revenue from it’s activities. They just have naming rights. Not buying their products would be more relevant.