Rejection rates immediately after Alice (2014): https://imgur.com/veW7vQ7
Rejection rates immediately after new Patent Office guidance (2019!): https://imgur.com/ylqD5sx
Apparently patent applicants were entirely unable to to adjust their applications in line with the decision for a whole 5 years where rejection rates were consistently >30% (and rising!). Then, immediately after new guidance, they all "get it" and rejection rates drop below 20%?
Remember, guidance is just a summary of applicable law and precedent. It is training material. If there is a significant change in rejection rates, it means Alice was somehow misapplied for 5 years and no one ever meaningfully contested it.