If you do that new users like me won't be able to see or use it at all.
That would help the safety part now, wouldn't it?
But to answer your question:
But the guide and scripts to use are from 2016 so is it still safe to use this year? I know score sender always has a chance to ban but I mean relatively speaking.
AC remains unchanged this year really, except for the encryption on scoresending-thing, the thing that the SS program is being updated for right now. So you'd have the usual chance of being banned.
Some of us negate the risk simply by scoresending only on shells, and say, using AOB codes on accounts you want to keep instead. I would recommend that for a new player. Have linked to you the guides for AOB on Discord previously.