Couldn't disagree more. There are plenty of posts about modelling Irish railways - Kirley Junction, Patrick's Layout, Modelling Bord na Mona, Tara Junction, Amiens Street Terminus, JM Design's Tin / Heating vans, 33lima's NIR 80-Class DEMU, murrayec's DART units, Riversuir's Tara wagons and so on.
If you want to remove all the things you list the people like Noel from Tara Jct wouldn't be able to include references to his road vehicles which add so much to his layout's appeal. If you dont like the non railway subjects then you don't have to look at those sub-forums.
The inclusion of non-railway subjects doesn't diminish the amount of Irish failway models that the site can feature. It is people who are modelling Irish railways who are not posting updates, pictures etc of their models and layouts who diminish the amount of coverage of the subject on the site. We haven't seen any postings from Ballykay recently and Mark how about a look at your layout?