Earlier quoted context omitted.
You forgot: 3) People with 10+ years experience generally don't go out looking for work and applying for interviews. By then you have enough connections that if you want to change job, you'll find it through old colleagues. Not by shopping around like younger devs. This applies to most all professional occupations, not just Software Engineering. If you look at people applying for positions in economics / law you'll s…
This perception has really been hurting me, I think. Nearly all of my professional connections are lifers at my original employer, and a significant number of them are in the 75% group mentioned in Ed's post at the top.
Here's something you can try: what do you wish you did 5 years ago (that you could have done with your knowledge at the time)? Now, imagine what you in 5 years will want the you of today to do. Go attend some local conferences or meetups. If you have trouble making connections quickly, prefer repeated events.