I could buy that a few years ago, but EV adoption is taking off and some big automakers are now chasing Tesla's lead. Even if Tesla keels over and fails, their impact will be felt for a long time. Similarly, SpaceX kickstarted a new age in space launches by showing that the old ways really could be improved, getting reusability out from the long shadow of the Space Shuttle, and getting private companies into the game as more than extensions of the government. Like Tesla, they've made a big impact now even if they collapse.

The hero worship should be pretty simple to understand: he's built (with the efforts of thousands of people working for him, of course, it's a huge group effort) amazing things. Every time I get in my car, I marvel at it. He's landed an orbital rocket on a barge in the ocean. Several times! Even if somehow these things somehow fade into absolutely nothing, they're amazing accomplishments.