Many great arguments against CRT and SEL have been made.
As a parent, I am vehemently opposed to any methods and theories that indoctrinate my children. I would feel the same way if you proposed a forced religion class.
Religion needs to stay out. Marxist theories need to stay out.
If you choose to implement SEL and CRT, you’re going to have to allow my children a study hall during that instruction time, because we’re not interested, and you’re not going to force it.