What Tesla did for the world, in my opinion, was make electric cars a desirable product. Before Tesla, the image of an electric car was that of a compromise, a vehicle for "hippies" and not people who love cars. In that regard, they got some things right. I really doubt the F150 Lightning would have happened if not for Tesla's successes in the market, for example.
And even still, it does seem like the market has a lot of catching up to do. While I'm not an expert, it seems like the Model Y heat pump is still state of the art electric vehicle engineering. Hopefully in the future, all electric cars will have high performance heat pumps and sophisticated temperature management for the battery system, as it would definitely alleviate winter range concerns. I think right now a lot of people believe that it is impossible to have an electric car that performs well in cold environments, but it seems like it is possible to maintain almost all of the range with enough engineering.
It's sad to see Tesla in the dumps like this. It's easy to meme on it, but the truth is that behind the many issues, the team did accomplish something pretty incredible. It really isn't every other day that a new car manufacturer pops up and manages to swipe significant marketshare. When I first moved to the California bay area, it was pretty novel seeing just how many Tesla's there were. But back here in the Midwest again, it's getting to be kind of uncommon to not see one on a drive nowadays, too.