There really aren't very many different tip types available for airpods, since they use a special clip attachment method that means you can't use any standard existing tips.
I've been looking for aftermarket tips for my pro 3s and there's maybe 5 actually different tips available (crappy foam, decent foam, bad hybrid, basic sticky silicone, basic bad rubber). They're distinctly lacking in good quality tips with different textures (can help with comfort and keeping them in your ears) or different bore sizes (comfort and changes the sound signature). TRI clarion, Tangzu Tang Sancai, Penon Liqueur, JVC Spiral Dot are a few different standard tips that would likely be way more comfortable than the standard airpods tips if you could actually use them.
Shoes are actually a great analogy here, because the companies all use different lasts, so it doesn't matter that eg. Adidas has thousands of different shoes in over a dozen sizes, none of them actually comfortably fit my feet because the heel is always too wide and the forefoot too narrow.
Also, they only come with 5 tip sizes (4+1 on the buds) and use an oval shape which I personally find less comfortable than circular tips+stems.
I've owned 2 of these (returned and reordered thinking the first might've just been bad) and neither worked properly on Linux with an AMD 9070xt and an LG CX. They'd have black screen dropouts every few minutes, and occasionally full screen color corruption.
Part of that might be if you're using them wireless because then you're double compressing the audio which amplifies the artifacts (mp3 -> Bluetooth compression).
Apple officially deprecated GL/GLES on both MacOS and iOS 7 years ago, and only ever supported up to GL 4.1 (which came out in 2010), meaning it doesn't support essential "modern" features like compute shaders (DX11 had them in 2009), or bindless textures (supported since 2012 on AMD+Nvidia, and 2015 for Intel iGPUs, massive performance win, needed for GPU driven rendering and ray tracing).
Linux on arm is actually pretty terrible outside of the server space due to their (Qualcomm, Imagination, and ARM) integrated GPUs being bad and having terrible drivers.
R5s has a garbage CPU that won't be able to handle QoS on probably >250mbps.
I'd avoid anything arm based that doesn't have a7x cores (ideally a76/a78 or newer, though I don't think there's any SBC socs using the a710/715/720 yet). A55 cores are old stupidly slow efficiency cores (area efficient, not power efficient).
Shoes are actually a great analogy here, because the companies all use different lasts, so it doesn't matter that eg. Adidas has thousands of different shoes in over a dozen sizes, none of them actually comfortably fit my feet because the heel is always too wide and the forefoot too narrow.
Also, they only come with 5 tip sizes (4+1 on the buds) and use an oval shape which I personally find less comfortable than circular tips+stems.