I find Paul's words on eating sacrificial animals interesting.

Essentially, since God doesn't need sacrifices there's nothing profane about eating them so it's fine to save some money on cheap meat.

However, if someone doesn't understand this, and sees you eating it, that encourages them to do something they think is wrong, which is in itself wrong.

I read it as "it's fine to break rules that don't make sense, but keep it to yourself or lesser minds will decide that rules are bad due to your example".