This doesn't mean that failing to fix those problems will kill Tesla. It may, however, cause a large drop in stock price, massive losses for shareholders at large, and E.M. in particular, restructuring of their debt, and possibly acquisition for pennies on the dollar by another auto manufacturer.
Like, when I step back and look at Tesla's current challenges, they have two big ones: delivered products to meet demand and improving their driver assistance/autonomous driving offerings.
"Jerome Guillen has been promoted to President, Automotive, reporting directly to me. In his new role, Jerome will oversee all automotive operations and program management, as well as coordinate our extensive automotive supply chain. Jerome has made major contributions and acquired deep knowledge of Tesla’s operations over the past eight years at our company, from being the first Model S Program Manager to managing all vehicle programs, then all vehicle engineering and worldwide sales & service. Recently, Jerome played a critical role in ramping Model 3 production, leading what almost all thought was impossible: creation of an entire high-volume General Assembly line for Model 3 in a matter of weeks. Before coming to Tesla, Jerome was responsible for creating and running the most successful semi truck program in history at Daimler’s Freightliner division."
I'm not sure that the summation of that would be that the "product is not good", though. It just means that some aspects of it are disappointing.