For websites like this I always use the sakura css bookmarklet https://oxal.org/projects/sakura/bookmark/. I really appreciate the author lets me and everyone else read their blog the way I like.
This worked great for me on my iPhone. Admittedly it was a pain in the butt to add the bookmarklet to my actual bookmarks, as you can’t long-press to copy it.
This is just terrible. This weeaboo stylesheet adds HUGE left and right margins and the spaghettifies the text into column slender as sakura, doh.
I personally find text with huge margins easier to read than text without, but that's just me.