More negative reaction from Salvatore Sanfilippo on X to Fable blocking certain questions:

I believe what Anthropic is doing, gating the ability to do certain harmless things like LLM research, and with incredibly sensitive filters that even medical questions are often blocked, is deeply wrong. They got open research, the Transformer, GPT2, …

Anthropic has walked back the part of this where they secretly rerouted LLM-related requests to avoid detection.