I'll walk back on the five years FAANG claim as I was venting a bit. But let's say you earn $200K (you'd start with less but end up with more at the 5 year mark), $135-165K take home, $105K if you save 70% of your salary. If we count compound interest, investments, stocks, healthcare savings due to generous SWE contracts, you could definitely achieve freedom if you wanted to with the 4% rule. It would require abandoning some luxury, but even on 30% of your take home salary you would have a decent lifestyle, more than most make total. And then you'd be in a position to do what you want, be as healthy as you need to be, no longer a need to buy things to make you forget about your servitude. You could travel on the cheap with longer flights because you would have time to do so.

Let's say I'm wrong, and it's more like 15-18 years. Well, that's still much much much better than what most people get. You can have decades of your life back. How much of your freedom are toys and consumption worth?