Good chart. But 401K performance, if not mis-managed, should be a net of 3% after inflation. Pay should be close to, or slightly above, inflation.
So one line is a pre inflation line and one is a post (net of) inflation line.

And the pay chart shows a gain of $6 million in the last 8 yrs that equals $750,000 a year. There's a couple guys in the industry making that. IMO $400K-500K, and perhaps $600K, would be a more realistic end of career estimate.

If the annual raises are 3% or more, it's entirely plausible that at the end of a 30 year career that's starting today, you will be over $1 million a year in total compensation, even without premium pay.

Nice round number, and entirely plausible, but the inflation adjusted buying power will decline proportionally.

Wait long enough and everybody gets to be a millionaire. Lot more common now than when I was a kid.

Maybe, maybe not. Regional salaries are only growing at ~1%/year, over 25 years they will lag mainline pay by a factor of at least 2. So it's conceivable that mainline pilots will make more than 20 times what a regional pilot makes.

That's not sustainable, regional pay lagging inflation indefinitely.

Regional pay already lags mainline by a factor of two. I can prove that with old W2's.