It just depends how a topic is approached.
Sometimes threads last a while if they think there is room in the thread for a constructive conversation.
A lot of cheating stuff tends to be venting, leaning into witch hunting, contentious, etc.
What I often say is don't view forums like twitter. On Twitter (or a platform similar to twitter) people just say whatever and people either pay attention to it or they don't. Forums are gonna have more moderation, The site is the host and we are the guests and they are gonna use discretion based on rules to decide what they think is best. Less wiggle room on forums, more wiggle room on other platforms.
On forums I wouldn't take it personal and there really is never a point in fighting against it. If you have something to say and don't want it subjected to the discretion involved in forums then it makes sense to use a platform like twitter.
It's just about choosing what makes the most sense for you. They don't have to host what they don't want to host.
My personal opinion on it is that they are generally right in how they approach it on the topic of cheating. Nothing good really comes from letting that topic drag on and escalate.