Yeah the forum software needs some love, it’s quite a few versions behind. Imo it’s far enough behind that upgrading is going to be a complete pain in the ass. The software stack (webserver, database, application) all need to work together and then the forum software sits on top. And then there are forum plugins that sit on top. Making sure everything plays nice together can be difficult. Add a decade of data and it could be a lot of work.
It works currently - and that’s what matters. Maybe I should pester Mark to see if he would like some help breaking it.