Again, you're entitled to your opinion and so am I. If you think Oliver and Company is just an ok movie with bad voice acting, so be it. I however think its a classic movie from that era of Disney and the voice acting was perfect for the time and location of the film. Again if you think otherwise so be it, doesn't mean my opinion is any less valid than yours.
And no not everyone is destined to be a great actor just because they were born in Hollywood, in fact that is a silly statement since most actors aren't born in Hollywood. Most actors are actually born outside of Hollywood and LA. I'd have to look it up, but I'd venture to guess a large portion of the Hollywood elite especially weren't even born in California.
And hey if you got the long hair and live in your mom's basement, then yes I'd say you got a good shot at being cast in any Wayne's World reboot....