Installing Debian on NAS?

Hello,
recently my TS451+ showed the first signs of failure and I’m looking for a replacement device.
I have installed Debian on it to be completely independent from the proprietary OS of QNAP.
When looking for options to install Debian on one of the newer devices I didn’t really find many references.
Debian Installation On QNAP - QNAPedia ← only lists old devices.
Is it still possible nowadays? How is it done? How do I do this on a device with x86 architecture?

Hope you can provide me some hints as the QNAP devices are great beside the usage of a faulty processor with the LPC problem.
I don’t want to run Ubuntu as an app/container/vm within QuTS.

Regards

QNAP NAS with intel or AMD processor are just PC’s as long as you get a QNAP with a HDMI port, you can install any OS you want on it.

Great, thanks.