I spoke at Taquelah Lightning Talks on one of my favorite topics -
Does your functional automation really add value?
You can find the slides here - https://www.slideshare.net/abagmar/does-your-functional-automation-really-add-value
Some references:
https://essenceoftesting.blogspot.com/2020/07/does-your-functional-automation-really.html
https://essenceoftesting.blogspot.com/2020/03/tracking-functional-coverage.html