Until proven otherwise, I say these are safe. Especially long term storage in the freezer. More safe than the plastic bags I smoked out of for years.
And that, Folks, is what is otherwise known as "Whistling past the Graveyard"
Someone who isn't already vested in a poor storage solution and is motivated to study (ohhh nooo's), realizes the question actually is settled in the opposite direction.
(translation: silicone and BHO is bad)