The article claims that Tesla valuation is not based on fundamentals but it fails to present any fundamental model.
Here's one model that justifies price target of $600 (i.e. much higher than current $480 price): https://twitter.com/garyblack00/status/1300540006864486404
Now, you might disagree with Gary Black's numbers and think that they are too optimistic but at least there are numbers to disagree with.
This article, sadly, lacks any quantitative or qualitative analysis to disagree with. You should probably disregard people who's only argument is shouting "bubble" and comparing anything to bitcoin.
For the past 10 years Tesla has been growing revenue at 50% Compounded Annual Growth Rate.
If they keep growing at 30-50% for the next 5 to 10 years, they'll grow into a valuation that might seem excessive today. That's a very simple and yet more often than not unappreciated math behind compounded growth. Einstein understood it. Warren Buffet understands it. The author of this article doesn't.