The time ring nonsense was especially baffling to me. I really don't understand how it prevented Zamatsu's destruction if he wasn't wearing it at the moment when Beerus destroyed him, it just doesn't make sense that the reason would be because a future version was wearing it, I can't wrap my head around that. If the time rings only allow someone to go into the future temporarily then wouldn't that mean that Goku Black should've returned to his own time and not be able to stay in the Future Trunks time indefinitely? How he even knew about the Future Trunk timeline in the first place is a complete mystery.
Zamatsu going into the future to get unlimited wishes is a real head scratchier. Who collected the Super Dragon Balls every year? If it was a different version of Zamatsu then wouldn't that mean their would be multiple versions of Zamatsu's trying to get them? If it wasn't Zamtsu, then why was someone collecting them every year despite getting used regularly by an unknown person?
Speaking of, Whis scolds Beerus for causing a new timeline to appear because he destroyed Zamatsu. What does he do after this? Go to another timeline and get Beerus to destroy Zamatsu, which according to Whis would create another timeline where that does not happen...
Actually Black had the time ring, that's the excuse they gave for why Black wasn't destroyed, present Zamatsu, the one you're talking about, did die.
Actually the issue I have with it isn't even really black. Yes it's annoying how Black having the time ring "somehow" prevented his deletion (which itself is a hole) but the other Zamatsu that was with Black, from what I could see and tell did NOT have a time ring and was ALSO fine. so...................................................................what?
As for Goku Black and time, Black didn't go into the future, the Zatmatsu that he partnered with that's from Trunks timeline is another dimension, its not the future of Blacks timeline because its a different timeline altogether, and for some reason Black decided not to take Zamatsu $2 with him to his dimension but take over that Zamatsus dimension instead because...........he did.
In theory every timeline should have a Zamatsu betray someone and use the super Dragon balls to get gokus body. which is mortal, and then go to another timeline to recruit another Zamatsu. It's so poorly though out it can't possibly work, the very small excuse they seem to use is that when Beerus killed Zamatsu in the present it indeed did destroy him across all timelines EXCEPT Black who had a time ring, and Trunks zamatsu who did not have a time ring because...........uh........
Also again this whole thing was triggered by Gokus visit, Zamatsu yes, already hated mortals but didn't act on it until Goku was involved for some reason, and he kills his guardian to steeal his time ring.
BTW, this also means the time rings can randomly jump dimensions as well and not only go into the future (and the past which is isn't supposed to do at all.)
To say Super is badly written is an understatement, it's a rush job that the writers assume will pass by insulting the viewers intelligence and hoping the brand will let them get away with it and people aren't paying attention and in part it worked, and that just makes me dislike it more. Half the time they were not even trying and some of it is clearly intentional.
Speaking of, Whis scolds Beerus for causing a new timeline to appear because he destroyed Zamatsu. What does he do after this? Go to another timeline and get Beerus to destroy Zamatsu, which according to Whis would create another timeline where that does not happen...
The whole trunks arc was pointless (just like U6 outside setting up for Zeno tourney) they didn't win, they lost 3 times, the 3rd time being the erasure of the universe, and the solution is to for Whis to warn that dimensions Beerus to kill him before it happens which would yes, create a time ring. Bust also since this Zamatsu wouldn't have a time ring that Zamatsu should already be dead by default due to present Beerus killing him so what?
Then there's the fact no one though to ask Future Zeno to just restore everything after he destroyed the bad guy mist. Who by leaving, and destroying that timeline SHOULD create at least Two time rings by the authority of the universes who can't follow the established rules himself.
Whis also again, should have made a time ring with frezza but the shows consistency is like water.