It has nothing to do with Interplay's "Fallout Online."
FOline 2238 is a fan made mod that was being made before Bethesda even owned the rights to Fallout. There are alot of mods out there for the original Fallouts. To bad there aren't that many for Fallout Tactics
Also several months back a bunch of us Dinosaurs got together and created topics about it and were playing it. The Mods didn't have any problems with that. So I am sure it's all cool with Bethesda. I also don't think the people behind the mod are making money off it.
I stopped playing it after the last wipe. I couldn't get back on even with all the updates, but I have heard it's even harder now, and it was very hard to play before.