That was an early experiment with a colony cut from under a mobile home. Normally, bees don’t attach to a diagonal wall because they think it is the bottom, but my bees soon burred the diagonal bars together and to the side walls too. I ended the experiment soon after that photo was taken, cycled out the bars, and the TBH prospered for about a year. It was fun, and my son and I learned a lot about handling bees.
Without the frames, they built comb straight and clean. Then the bull ants got in and the bees absconded, and I gave the TBH away to another member. My Lang is more convenient.
IMO, top bar hives are an interesting novelty and can be fun if the bees are gentle, but they are not very practical.
Still having fun