Why was Jason Weaver not the speaking voice for young Simba in the original LION KING movie?

The truth, revealed, finally!

Elton John vouched for him to do the singing for Simba, and when directors Allen and Minkoff offered him the speaking roles, they called Disney's lawyers, who had "just" inked the deal with Johnathan Taylor Thomas to be Simba's voice.

Weaver is still getting the residual checks.