So whether or not Silicon Valley is important to you has everything to do with what you value in life. As the article said, there is a big generation gap here. I'm an older coder who doesn't give a crap how many opportunities are around because I only need one at a time. And with remote work becoming ever more prevalent, I just don't foresee ever having a desire to move to SV.
I live where I can lead the life I want, not work the job I want.