I don’t know if it’s just me, or a very odd Discourse glitch, but your first link to the guide is just orange text to me - no actual link.
I was able to install Ubuntu 22.10 last night, after half a dozen failed tries on 22.04. I did verify the md5sum as @yetiman_64 suggested, but I think the two changes that really did it were using a proper USB card (SD cards fail) of higher quality, and creating the installation media from a Ubuntu live boot via the Startup Disk Creator app.
Creating the installation media from Fedora Media Writer failed even with the same USB drive and verifying the checksum.
Again thanks, can you add links to workarounds for the brightness and other function keys as well? And the thumbprint reader? (Unless these are not issues in 22.10 - I’m still exploring)