It was extremely cheap for a B class (and therefore flexible) ticket - offering 140 TPs and 8k Avios. Indeed that was surely the reason FTers booked it.
I don’t think many on here seriously thought it wasn’t a mistake. The fare element was -£9 after all.
That said, given cancelling tickets like this isn’t a zero cost option - and it’s not a loss like some of the J/F mistake fares - I’m a bit surprised BA didn’t let this one slide.
Provided I get my money back reasonably swiftly, I’m not going to get in a state about this.