The thread is about a DART derailment, and while some users drew funny comparisons to the Garth Brooks concerts, your post had nothing to do with the derailment at all, and so was veering off-topic. There are links to the forum's rules all over the site, so you really have no excuse not to be familiar with them at this stage... but then again, seeing as you chose to ignore PMs from mods in the past, and how you're just back from a ban for verbally abusing another mod, I suppose I shouldn't be surprised.
Do not respond to this post on the thread. If you have a grievance, take it up via PM.