

Yep. Even if you’re buying a product which is by meaningful standards “100% American made,” consider the invisible costs. The cost of the packaging that they use, the cost of the supplies/equipment they use in production and the upkeep required to maintain them, the cost of the infrastructure they use for logistics and operations, etc.
All these less visible dependencies affect the cost of doing business and can still be impacted by tariffs if anything comes from overseas, even if the product itself is just a bottle of maple syrup made in Vermont.
I think they mean not letting the ideas go unchallenged. If someone is reading through and sees a bunch of Nazis posting hate all up somewhere with no one else saying anything, they might assume that sort of behavior is just tacitly accepted and influence their perception of the community as a whole.