I haven’t tried it myself yet, but there is a GPodder sync server app for Nextcloud that can let you sync subscriptions and play time to any compatible app. This would probably be the best solution as it would use your existing setup.

openSUSE Leap has been amazing on my home server. YaST makes tasks like setting up a Samba share or even something like a DHCP server incredibly easy, and for anything I can’t do in YaST there’s a massive variety of command line tools I can use (for me mostly Docker). SSH access was a breeze to set up too, as it’s just an option in the installer or in YaST after setup.

Died 1990s, born 2025 - welcome back Mac hard drive firmware lockdowns

For the iGPU issue, there should be an option in your setup utility/BIOS on your motherboard that either allows you to disable the iGPU entirely (usually in the settings for CPU or chipset, can vary from board to board), or (in the case of my Asrock board at least) there is a “dGPU only” mode that automatically disables the iGPU when a dGPU is detected. For the RGB, since the 9070XT is a partner only card (so many different manufacturers make them), the RGB implementations can vary a lot between models as there is no standard design (would be wise to edit your post to say which specific brand and model of card you have in case other people with that brand have experience with it). It might be worth just installing openRGB anyway and seeing what it detects automatically, as it could pick it up.

Same on AMD as well. vaapi acceleration, after installing the appropriate packages, works nearly flawlessly on all brands of GPU I have tried.

Definitely agree on the used ThinkPad. You can get some surprising deals from businesses offloading even relatively recent machines that are still in very good condition (used to daily drive a T14 Gen 3 that was half the price of when it was new despite being only two years old and still in warranty). However, new ones do still retain very good compatibility (no issues on my P14s Gen 5), although the price point does make a Framework the obvious other option to look at, especially due to the better upgrade and repair situation (soldered WiFi modules on newer ThinkPads are really annoying).