The way the mobile version works is a bit weird. The front page has small fonts and can be resized, and if you open a new page within the same tab it doesn't treat it as a new page, it just replaces everything on the existing page; it won't change which area of the page is visible, so if e.g. you scroll down to the 1990-1994 subforum link and click on that, you'll have to scroll back up again to see the posts at the top of the subforum. On the other hand, if you open any link in a new tab (or "page" as Safari calls it) then the new tab will be optimised for mobile use (it has sensibly-sized fonts and can't be resized). I suggest whenever you go to Psynews on your mobile device, the first thing you should do is to hold down the "Psynews.org" link at the top of the page, then choose the "Open in New Page" option. Close the original tab, and then use the proper mobile version of the site in the new tab.
I have no idea why it works this way, but I don't expect there's anything the admins can do about it.