Very relevant for people working for startups, much less relevant for those working at public companies where the stock can be sold the day it vests. Standard vesting starts after a year cliff, but it’s common to get a large signing bonus which makes up for it. Plus some people are getting offers with no cliff.
I worry that some really skilled developers may be looking at these stats and not realize what they are giving up by accepting a job with the average salaries reported here.