JD
rather than close and leave them....why not just eliminate them ?
Wipe them out
That may be the next step.
Closing them leaves access to the information they contain (for what that's worth) but doesn't allow spammers to post.
As far as nuking them - It's a big task and absorbs a substantial amount of time. While the Covid in the DR has 120+ threads, the North Coast Forum has over 110 thousand posts.
Each has to be read and determine what other threads they impact before nuking them. Not a simple task at all.
And as an example: I was one of the earliest members on this forum with one of the highest post counts. 4 years ago, a spammer posted on an old thread. I responded to him and by mistake, a mod deleted my account instead of the spammer. Once it's gone, it's gone.
I don't want that to happen to anyone.