https://xdaforums.com/t/guides-2023-walmart-onn-google-tv-4k-yoc.4610749/
It appears that the new devices have been silently changed by Google to no longer allow you to have the same functionality you did before. Boot loader unlocking is now impossible unless someone can find an exploit.
Here are the images of the inside just in case its useful:
I don't know where else to post this. Please help spread the message about Google screwing us over.