You are probably using it yourself, right now. You just don't realize it because embedded stuff isn't sexy, won't make it to the blogosphere and just sits there doing it's job, year after year. Every vehicle, every boot of a larger machine probably uses FORTH at some stage.

Not everything is web based and not everybody is part of the hype cycle.

Since you're asking 'anyone' one example should be enough to satisfy you with proof: every IBM Power series system has Open Firmware on it which you can boot into: https://www.ibm.com/docs/en/power9/0009-ESS?topic=asmi-power... . Note that that doesn't even mention Forth by name.

Also note that the world is a lot larger than just the English speaking part of it, and that bringing up new systems is usually transitory: as soon as you can bootstrap yourself out of a FORTH environment you do so because it is a bit limiting.

Finally, as long as https://en.wikipedia.org/wiki/Chandra_X-ray_Observatory Chandra is still online at least someone is using FORTH in production.

It's just one of many space missions where FORTH plays a role.