Exactly. The bulk of the celebration should be in California in general, especially in Los Angeles, given the history. It makes sense to have it at Disneyland, once again, given the history with it being the first Disney park.While I agree with the sentiment in theory, if it’s a celebration of the company itself it does make sense to have it at least partially in and around the greater Los Angeles area where the company was founded, which includes DL as a prominent touch point in the history of TWDC.
Ideally WDW would play a prominent role too, though but after the embarrassment that was the 50th I think we need to emphasize and embolden your own point above.
WDW will eventually get a piece of the celebration.