You're somewhat wrong there, anon, that's not where t.deadbeat started.
Let me advice you.
First, t.[fanbase] was perhaps most often used for unity, and just to increase objectivity of posts early on. Mostly it was used when saying nice thing about other holos or fanbases.
Second, by mid November Mori had mentioned Charlie once or twice, and had had the TT (?), so there was a lot of people miffed at her in /hlgg/.
These were mostly separate. There might've been a few derogatory t.deadbeats against posts that defend Mori, but I only say might, since I have no strong recollection of this. t.deadbeat was mostly used positively, as t.[fanbase] was used in general.
Then came the pasta that changed it. This pasta I suspect was revers psychology to get people use t.[fanbase] more, and in fact the third time it was posted when NA hours were starting, the thread exploded with t.deadbeats, and that was the point where the spam began, and where it was used more and more against Mori anti posts.
>that dreaded T2 stream in Nov
Are you talking about the T2 uprising? That was afterwards, at 29th or 30th? I can't really remember, so you can correct me. But that's my recollection, and by that point t.deadbeat had already been established.