CyberCubed
Yeah, ok!
Ash had all three starters for kanto and Johto. Him having more than one starter is not new.
The whole point is that AG CHANGED things in the series and D/P is continuing the tradition.
Ash getting all the starters was boring, predictable writing. It was fine in Kanto and in Johto it was somewhat repetitive, but nowadays it would be horrible.
And instead of wasting a starter on Brock this time like in AG, they gave it to Shinji instead.