You clearly don't work for one of the ones that grant 7 figure salaries. I'm not saying they're common or that any engineer can aspire to achieve one, I'm saying they exist, I've seen it first hand, and I don't understand why it's so hard for you to accept they exist. Nothing in your comment constitutes novel insight to me, and neither of us have a good measure as to which of us have more credibility than the other, but I suspect you're just judging based on your own narrow experience.
Edit, just for more context I'm speaking of FAANG level companies here and very rare individual unicorn engineers who have been specifically hired into these kinds of positions for past achievements that have impact across the whole industry. I would agree with your general skepticism in any other context.
As I said, I'm on my second FAANG. The "very rare individuals" you mention are hired L9 or above. That is, distinguished engineers+. You don't get to L9 with "a valuable technical contribution", you get there because people know who you are, you have strong network of connections within the industry, and you are in a position to make strategic decisions. It's very much not a technical position, it's borderline executive. Let's put it this way, the people with that kind of compensation, you know who they are. It's never an anonymous whizz kid who's very good at solving technical problems, it's the guy who hired them and/or knows how to direct their work.
As you said, you don't know me and I don't know you, so I don't have a reason to doubt your word. If you say you've met engineers who get that kind of compensation, I'll give you the benefit of the doubt. Everyone I've met or I've known to be in that level of compensation were the people I already knew were making that kind of money.
Edit, just for more context I'm speaking of FAANG level companies here and very rare individual unicorn engineers who have been specifically hired into these kinds of positions for past achievements that have impact across the whole industry. I would agree with your general skepticism in any other context.