https://support.mozilla.org/en-US/questions/1286588

The browser you posted with provided this "user agent" string:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.58

Looks like Microsoft Edge on Windows 10. But it's not Windows 10?

https://support.mozilla.org/en-US/questions/1286588

And this thread is helpful how?

The info in that thread is incorrect as Firefox portable uses the official Firefox builds bundled with a custom launcher to keeps the Profile self contained with it so it can well run completely off a usb flash drive for example.