The industry is so crazy now because of the last recession. Investors didn't know where to put their money after the real estate collapse and they decided to pour it all into funding startups hoping, at all costs, to catch the next Facebook.
We're starting to see that maybe even Facebook isn't really the next Facebook.
Additionally we never really solved the root of the last crisis: exploding credit/debt.
It's impossible to know how this will all really play out this time (who would have guessed that the pandemic would be immediately followed by a stock boom). However my advice would be to focus on adaptability. Don't chase a dead dream too long. If tech never comes back to the insane period we're in now, I think there will be a lot of former developers that suffer a long time before they realize this.