The 'crash' was a very well needed market correction as few startups had figured out how to make money - and a lot of regular stocks were way overvalued.
It was a little rough for devs, but honestly, anyone with decent chops had a decent chance of securing 'something' - either in the Bay or elsewhere.
There was a huge drop off in marketing, biz dev etc. over the span of a few months it went form 'a lot of parties' to almost none!
It recovered somewhat after a few years - Google did an IPO that went really well. Then the Facebook craze started.
The 20008 crisis was much, much worse as it hit the entire American economy in a very powerful way - not just a stock/.com correction.
FYI the 'telecom bubble' was 5x bigger than the '.com' bubble, there were huge investments in optical switch companies you never heard about that went bust.
That said - the buzz since 2012 has been stronger than in .com. During .com all this zany stuff, startups etc. were completely new. So it was completely new math. By 2010-2012 - or say the real establishment of YC, a lot of the zanyiness had been normalised and it metastasised throughout the world in a way. The valuations these days are 10x-100x bigger and the game is significantly more global. In .com companies that did a $500M IPO were 'huge' or whatever. Nowadays, it's almost not going to make the news.
The correction that's coming eventually probably won't be as severe as there's no reason for a real crash. Something will give - probably China slowdown - which will pop a lot of other bubbles. To give you an example - WeWorks' valuation was not actually that crazy - as long as they could continue to raise (and it's not entirely irrational) then they could move ahead. The $50B->$10B drop is not some crazy mis-calculation so much as it is an example of the leverage being applied. A little bit of wind out of the sails and lack of momentum can kill something that might actually be working (and WeWork actually does have some workable metrics, just not at $50B).
So the coming adjustment will affect 'everyone' even if it is really only driven materially by a few things (i.e. China, trade etc.) though probably not severely.
If you do good job and have reasonable skills, I wouldn't worry too much.