Earlier quoted context omitted.
Yes, because the algos are being faked-out by the spoof. It's like being juked in basketball... if the algos were smart, they'd hit the spoof bid.
> if the algos were smart Algos aren't smart. Thy automate human reasoning to the extent logically possible. If as a human you don't know how to detect a spoofed bid, then how do you make algorithm "smarter" than yourself?
The orderbook imbalance signal is a strong signal, but its not the only one...
(Full disclaimer: I worked as an algo quant at a large bank for 5 years. During which time I was constantly hounded by Compliance over supposed "spoofing", which we never did.)