I agree about the over use of written checklists.
Using nmemonics or flow pattern are still a forms of checklists, however.
In a previous CP/CFI job our school taught from 1st flight up to night & CPL to do things from memory or through some logical pattern.
Even when tested by external or Authority examiners no student was ever clipped for doing so. The reason? Because the system worked. It just wasn't necessary to have a written checklist to tell you to switch the master on etc...
I've swapped between numerous GA types & have never found the need to follow a written checklist for normal ops or immediate actions for abnormals/emergencies.
Different matter if fault finding some electrical gremlin & the like or making sure that all subsequent actions are completed.
In my current job written checklists aren't used in the normal day-to-day work. There are only a limited number of items that need to be remembered.
What's next? A written checklist to remind us to get in?