I think the living expenses include health expenses, but other expenses like phones and travel probably not
I doubt this hypothetical person making $80k has a Cadillac health plan. They could definitely be looking at costs like $1500 for a dental crown and $1000 for an MRI before they hit their deductible.
It's just very silly to find a website, grab a number, and then conclude that saving 200k in 8 years is realistic