I think it might be a potential question mark if an older engineer habitually spends a short amount of time within companies as there's a possibility that they'

I think it might be a potential question mark if an older engineer habitually spends a short amount of time within companies as there's a possibility that they're harder to get along with or tend to frequently move on before technical debt mounts up. If somebody gets to their mid-late 30s without staying somewhere at least a few years, I'd anticipate them bouncing similarly. That said, I hate the use of the word "commitment" here. If a company hits a rough financial patch, they'll dump the most loyal and committed employee in the blink of an eye to make life easier on themselves. It doesn't matter if you just bought a house or your wife is due for a baby or your kid is suffering from cancer: you're expendable 100% of the time. Tough to use words like commitment or loyalty in that environment.