I had been using Balena Etcher to write Linux ISOs to USB sticks since I installed Linux on my current workstation back in 2020. I read something late last year or early this year about Etcher sending telemetry about the ISO being installed, regardless of the user settings. From there, I read a recommendation to use the Raspberry Pi Imager as an alternative. Despite its name, the Raspberry Pi imager can write any ISO to a USB stick (although it does have many Raspberry Pi-specific options). I have used it numerous times with no issues whatsoever.