I watched it, and while I like the building, and would have used OSB as well, I’d have painted it to retain the texture, but to change the interior light. I’d have also tried to find old bricks, or slate roofing tiles to use on that chimney breast, rather than basic blocks. She seemed to be perfectly happy, and it’s still very sparse inside, but once she has more furnishings in, and decoration up, it’ll probably soften up.
I don’t recall the architects persuading her to use bare blocks and OSB, but they were certainly trying to show her that, with some imagination, using basic materials, she could build something better than just a rectangular box, which she did, and was perfectly happy with. The architects themselves seemed extremely surprised at what she’d done, too.
I loved those low-cost houses on Skye, though; I’d happily live in one of those, especially the ‘Hen House’, if that’s what it was called.