That seeking alpha article doesn't mention Tesla's 4680 battery cell, which reduce battery cost massively for Tesla. Also, omits that Tesla is dominating in China despite massive ev competition. Once Berlin is up in Spring '21 the same will be true in Europe. Also, the article claimed GM is a leader in autonomy with Cruise even though cruise uses geofencing . Article could have questioned the stock price, that's fair, but the points raised were weak.
Elon's email just highlights that he and the company understands they must execute well and continue to come up with innovative ideas and tech (like their new battery technology).
There’s nothing to suggest Tesla will be dominating China, a country that overwhelmingly favors local and European brands rolling out EVs en masse and Tesla’s European market share is dropping like a rock. Points raised are the reality. Tesla’s valuation derives from unproven speculation.
Tesla’s Market Share Is Sliding In China And Has Cratered In Europe
Elon’s e-mail highlights how fragile the valuation is. Tesla is eeking out a profit without any major competition. Profit margins will collapse as more and more competition enters the marketplace.