Dude, he's a producer.
Do you think that Quincy Jones and Phil Specter played the instruments on all those classic pop records?
No, producers and beat makers are two different things. Dre happens to be both or only one depending on the day.
Producers guide the recording session, not play all the instruments.
Preach my nikka. All these nikkaz talk all this shyt about Dre yet NOBODY has been better without Dre than they were with him.
What happened to Eazy after he left?
What happened to Death Row after he left?
What happened when Snoop stopped working with him?
What happened when Eminem started "producing" his own stuff?
What happened when 50 started fukking with other people.
What happened when The Game stopped fukkin' with him?
You use Bernie Worrell, one of the greatest keyboard geniuses in history as an example of what rappers basslines should sound like?
That's like posting highlights of Michael Jordan and saying, "Why don't people play ball like that anymore"?