In a sense. Non openness is a non problem for fairly limited AIs, because their limitations prevent them having a wide search space that would need to be narrowed down. Non openness is also something that is part of, or an implication of, an ability that is standardly assumed in a certain class of AGIs, namely those with human level linguistic ability. To understand a sentence correctly is to narrow down its space of possible meanings.

Only AIXIs have an own oneness that would need additional measures to narrow them down.

They are no threat at the moment, and the easy answer to AI safety might be to not use them....like we don't build hydrogen filled airships.