But even if we have free will to choose, God knows all. He exists in all space and time. He knows every freewill choice each person will make ahead of time. So he creates people knowing they are unavoidably destined for eternal agonising pain in hell.
And even if we make freewill choices, why doesn’t he intervene? A parent will stop a baby playing with a deadly sharp knife. But if the parent doesn’t see it happening, why doesn’t God jump in and do the right thing like the parent does?
Sure, anyone can sign with a key. Having THE key is the extraordinary part.