One thing to keep in mind regarding Ryzen 6000 vs 5000 on these gaming handhelds is that the iGPU improvement on Ryzen 6000 via RDNA2 is a big enough improvement that it alone can make or break your device (see also: Steam Deck also uses RDNA2 and, when it launched, had iGPU performance far and above anything else).
So, in theory, these handheld game systems makers could very well want to pull out all of the stops and jump through any hoops possible just to make it happen.
But on a laptop, the benefit is nowhere need as great since, as much as I prefer integrated graphics, any laptop focusing on gaming would just go straight for using a discrete GPU anyway.
And keep in mind that, at this time, AMD is supposedly putting a lot of focus into improving their gaming-related mindshare since, let’s be honest, tackling productivity-related mindshare means tackling CUDA which… hoo boy that’d be a monumental task that seems more easily tackled by supersceding the concept of GPGPU altogether via the use of various accelerators/DSPs/FPGAs/“AI accelerators”/etc. integrated right onto the CPU (something that even Intel is working towards) considering AMD’s acquisition of Xilinx.
Anyway, with all of that being said, there’s also the niggle of Pluton on Ryzen 6000 mobile which Microsoft requires the 3rd Party Certificate to be disabled by default if you ship Windows pre-installed on a device with Pluton. The great irony though in that using something like SteamOS would require re-enabling the 3rd party certificate but, at least on my own 4800U OneXPlayer, the amount of settings you can change in the BIOS really is basically non-existent (even more non-existent than most OEM PCs!).
You want to talk about weird corners to cut, here’s one for you - AFAICT every multi-thousand dollar TV with an ethernet port uses a 100mbps ethernet port; even the integrated wifi is faster, though people have figured out that you can commonly use a USB ethernet adapter on these TVs for faster-than-100mbps speeds.
I have a freakin Asus EeePC 1000H netbook with a 1st gen Intel Atom N270 + Intel 945GMA that has gigabit ethernet! Actually, I don’t know of any computer motherboard (laptop or desktop) made in the last 15 years with an ethernet port that isn’t at least gigabit.
My only guess as to why this is relates to TV’s use of mobile-focused SOCs which 99.99% of the time are used in mobile devices or general embedded systems. Obviously mobile devices don’t even have room for an ethernet port, and a lot of embedded systems tend to use ethernet more for logging and diagnostic purposes. Honestly, if those SOCs didn’t include ethernet (there was a recent SOC, maybe a mediatek? that I looked at a data sheet for and, sure enough, it listed ethernet at 100mbps), I wouldn’t be surprised if TV manufacturers would simply not even include ethernet at all.
…though LG made their own SOC as of 2019 (hence why they have HDMI 2.1 on all 4 ports), so they’ve much less of an excuse.