None of those things are going to make a bad feature successful and not doing these will not make a good feature unsuccessful. They're all a form of technical debt that should be used very sparingly. Some of them will be more of a distraction than they're worth. Somewhere around 2010 a sort of product development pseudo-science started to take hold of the industry. Telemetry, A/B testing, surveys... oceans began to b…
Admittedly there's a big difference between web apps and products that are meant to last or even contain hardware components.