[gregjor]

Probably because people who post online and try to profit from blogs and videos selling a lifestyle or dream skew younger and more tech-connected.

The possibility of retiring before 35 or 40 is obviously not available to those past that age. We boomers focus on financial independence and retiring before 60 or 70, and don't write monetized blogs or make videos about it. People who don't work in tech may not have enough excess income to save half of it, or they may have children or other obligations. And maybe not everyone who does have lots of excess income finds their career so draining that they dream of bailing out early.

For Americans at least -- I believe the epicenter and majority audience for FIRE material -- we're in a race against time to achieve financial security before aging drops us into the merciless health care system that will consume all excess income and savings. The FIRE demographic has the advantage of youth. As an aging boomer still in the software industry I can't criticize anyone who wants to get financially independent and out of the hamster wheel of tech, but I also see it as a fad and lifestyle for sale like so much of what gets promoted online.