Article is old but I have often heard this anecdotally. I have known a number of people over the years who changed jobs every 1-2 years, because they said it’s the only way to get ahead salary-wise. I suspect it’s a lot harder to pull it off now, tough. There’s a lot of fake job postings. Not to mention running the gauntlet of submitting your resume 300 times to get auto-rejected 299 times by some dumbass AI where a clueless HR person typed in the criteria prompt. “A young person with at least 30 years of experience who knows ALL the latest technology but will work for less than a landscaper per hour thanks bye”.