Player1 I wasn't trying to point a finger at anyone.
Thank you. I can sometimes be a little touchy. I still take a lessons, and I always appreciate the ideas I get from online discussions like this one. Which is to say, I still have a lot to learn and lots of room for improvement. But I've been playing piano for 25 years now, so I bristled at the suggestion that I don't have an internal sense of timing... π
Re your comment about clocks, interesting comparison.
I don't disagree with your point that timing, tempo, is an internal skill. It has to be felt in order for the pianist to play in a way that's convincing.
But that doesn't mean we shouldn't use the tools available to use. A metronome is just that, a tool, and as such, it has a place in the toolbox of practice strategies.