As a former engineer at Tesla, the valuation does not make sense at all. Their internal infrastructure is a complete mess, and honestly, it's full of security issues, I wouldn't be surprised if things start falling apart.
A mistake some engineers make, I've made it myself, is thinking that a company's success has anything to do with how good the code is from a computer science ivory tower perspective. A fast growing startup usually has a huge mess from the fast growth no? Haven't seen it otherwise, but that's just my anecdotal sample size.
Second this. A company is more than just software and code... It's also marketing, hype, goodwill, customer service, design, UX etc...
I'm afraid of speaking out, but let's just say I've worked with many fast growing startups (several to IPO), and none of them were as bad as Tesla.
Maybe talk to an investigative journalist anonymously? And report what you’ve seen..
Unless you can provide evidence that other companies coding and infrastructure practices are many time better then Tesla the impact on valuation is basically 0.