No, it was not a change. Most likely just anecdotal success stories.
At one point you also wrote this, but I could be misreading what it’s implying?
I didn’t explain it correctly so I’m sorry for that. On the backend we create a complete “power profile” from sprint, anaerobic and aerobic capabilities. So to have an accurate/complete power profile you should do efforts (maximal) in that range. It doesn’t mean that zFTP uses that complete range to be calculated…