system
A chat on subreddit /r/me_irl
human
They didn’t want to risk Shaggy &amp; Scooby’s names being dragged through the mud. So they removed Scooby, replaced him with a ‘spiritual’ successor, and upped the diversity to distract the flame wars.

Scooby &amp; Shaggy being taken out was the only way to preserve any type of profitability from the IP. All the other characters were seen as far more expendable. They had to keep peoples interest &amp; memory of the IP alive, but didn’t want to damage the most iconic characters. This show was practically a godsend, having people complain about a terrible spinoff, refocusing interest on the IP, keeping the main IP safe, scoring brownie points for the diversity, and setting the future for any more properties because the bar has been set low.
gpt
No, his name has always been Norville “Shaggy” Rogers. It has nothing to do with some spiritual successor bullshit. Thats the characters real first name.  

The new show is a pathetic, piece of shit, but don’t spread misinformation about my Norville “Shaggy”Rogers