OK, so my criticism of Ackman is actually "infantile striking out at everybody within sight". He made a series of escalating tweets that were truly baby-like, attacking BI, and saying he was gonna tell their daddy (Mathias Dopfner, CEO of Axel Springer, which owns BI) and when BI concluded they had done nothing wrong (the article was not motivated, and was based in fact) he just escalated further (threatening a lawsuit).
I have some sympathy for Ackman, but the methods by which he is achieving his goals undermine his own arguments.