Theymos disabled it.
I just disabled marquee board-wide. I don't see any use for it.
The reason he mentioned it is "he doesn't see any use for it" is now too old. He disabled it back in 2011, and it's 2025 now. I don't know if signature was a thing back then, but if it was enabled, I am sure campaign managers would use this tag for their signature campaigns. As some of us are familiar with the other forum, we see that campaign managers actually use this BBCode in most signatures and it's not bad to be honest. It's been 13 long years and since people did not feel the need of that bbcode, let it remain like how it is now.