For me, the lack of spacers make it difficult to separate each topic while reading and it gets jumbled up in my head real quick, it usually takes me 2-3 rereads to figure out what it is. It's easier to deal with on light mode because the contrast between black and white text is a lot more distinct then blue and dark grey, but light mode also causes eyestrain so I'd rather not, and it's still a problem on light mode, just less so for me.
My suggestion is spacers between threads
