One of the streamers I watched was grinding some gold from bastion when he got attacked by a group of piglin brutes. He logged of out of pure panic but when he logged on again he didn't got attacked for a split second. So he cheated his death by relogging untill he could safely run out.

I don't think that is suposed to happen. Giving the players the ability to cheat their death like that is not very neatly.