Now THAT, I could read!
I went to the thread describing the new format changes and discovered that I could go to my settings and switch from the new forum default to something called "Styleforum blue". It seems to have helped a bit but the fonts! They so tinee, still.
I bumped up the size of the fonts for this site in my browser. I don't know the PC command, but on a Mac it's Command-plus (repeat Command-plus a couple of times or Command-minus to your taste).