I'm interested as well. I agree with the overall point and do think Cal focuses too much on expert performance (ericsson et al) while completely ignoring tacit knowledge for some reason. But I've been reading his stuff for years and never thought he was one to peddle his own products beyond "this worked for me, might work for you".

In that sense I find him way better than other authors listed: he actually makes good use of the tools he recommends as a professional (as opposed to making a living spouting bullshit about other people's work).