eastsider is right, minamino is wrong.
If you want to be casual you can just ignore it and I think in platinum, you can have 0event points & still manage to stay platinum. Unless you're really bad and finish 4th everyweek.
I used to hate the additional 2 new divisions because the platinum reward is lowered, we get less than 100tokens per month but diamond is the new platinum and with ultimate you can finish last in 4weeks and you'll still get extra 24tokens per month (4th get 31tokens per week)
I mean you don't have to stress out if you're not top tier. But if you want to stay top you have to engaged in the event. You think Nodeus wants to reward manager who didn't play the game? ofc they'll reward those who spend more time on their game. Duh