This is because, as of right now, we have 0 information on G5 and it looks like that trend will continue for a long while. Even the leaks from three and a half years ago don't count as official for our definition, they are so old there's nothing to say any of it is relevant anymore. And so we came to our solution. In order to help prevent misinformation and the spread of rumours, anything tagged as G5 will be assumed to be speculative until proven otherwise.
We look forward to the time we can reverse this policy.