This is just a satellite device for Home Assistant (self-hosted) which you can set up to do processing however you’d like. There are cloud options for each stage of the pipeline (speech to text, LLM to turn text into tool calls, text to speech), but there are local options for all of that: https://www.home-assistant.io/voice_control/voice_remote_loc...
Funny, my impression of KDE in the 3 and 4 eras was “Wow, this is shiny and sleek— oh, and it crashed. Nevermind.” Nowadays there is nothing I would recommend more to the average user who just wants something normal that works. It just works.
What you’re saying just sounds like a pointlessly personal and ideological attack. Against a piece of software. Why?
Since that page is a little dense, the higher-level version: PCI supports Option ROMs (OpRoms) - plug in device like a NIC or a GPU, your BIOS actually loads compiled code from it and executes it on the CPU. In many systems for example PXE booting (net booting) is actually a function of the NIC, executing code on the CPU to load an operating system. We're talking actual x86/x86_64 machine code here running in the privileged pre-boot environment. Not portable or secure in any way. OpRoms _may_ now be checked for SecureBoot signatures on systems where that's set up properly at least.
EFI ByteCode (EBC) is meant to help at least the portability side. I'm not sure if anybody is actually delivering devices with EBC OpRoms yet though. I'm also not sure if anybody is looking at using the EBC VM to sandbox untrusted OpRoms.
That's a bigger can of worms than you might expect. Most consumer WiFi chips only barely support AP mode, and I'm not aware of any that can do multiple bands simultaneously. You'd probably need 4 adapters on the repeater for triband. One to connect upstream, one for each downstream band. Three instances of hostapd all configured with the same SSID and auth for each downstream interface.
Then there's the roaming issue. This is largely what the commercial "mesh" systems try to solve: deciding / helping inform when clients should switch APs. There are many solutions and none of them are without issues, including the commercial ones. Here's a starting point: https://openwrt.org/docs/guide-user/network/wifi/roaming