On the latest macOS Tahoe 26.1 Beta 4 release I have noticed that I cannot enable the full articles on the MacRumors home page anymore. I have tried several times clicking the toggle link at the bottom of the page for turning the full articles setting on and off and it never switches to full articles for me. Most likely a beta bug in Safari and may be fixed in the next beta, but I would make the MacRumors staff aware of this issue in case it is something that can be fixed easily or if it is something Apple messed up in Safari again.