The rainbow was mentioned in God’s inerrant Word. Now that the gay rights people have co-opted it, does that make its previous meaning wrong? No, it does not.
Likewise with checkered floors. You’d have to document for me that the Mason’s cultural appropriation of such flooring preceded the widespread adoption of the design before you would catch me flatly declaring it satanic, as you have done.
Maybe satanism doesn’t exist?
Maybe we shouldn’t be vigilant against the attempts by the occult to slip their little symbols into normal society?