Let’s not forget that the focus of the forum is to promote discussions about Qubes OS.
Making it read-only would likely cause more confusion: Can't reply to [qubes-users] threads. If really want so much to access that category, what I suggest you do it get one of your accounts to trust level 2. The only bigger requirement is entering at least 20 topics.
You can then even activate the malinglist mode and check the forum via email so the forum doesn’t log which pages your visit.