I did the same thing. All my attacks were maxed out the second I unlocked a new one so I'm thinking that's why I got bored with it before I finished the story. If I ever do rebuy this for PS5 I'm going to try not to do that.
Don't know how credible this is but the DB Multiverse wiki (the first place that popped up when I Googled it) says they're race has a long lifespan so 10 years really isn't shit compared to how long they live.
Your answer is in your original post. "but since he’s such a long way away it takes him years to get there (I know it’s crazy but it’s non-canon so who cares)."