Many people that I know that play will gladly discuss rules they like and don't like, homebrew rules, how they like to roleplay or rollplay, talk about powers they use and ones they disregard, classes that are best, races that have great skills or feats, etc. Every single DM I have ever played with will talk all the above and what's best for world building, good and poor players, plotting or meandering, styles of adventures they consider best, etc. Some will discuss if they are heavy handed or light handed or party-killers or extremely reserved with their power. And yet, despite all the differences - they all play the same exact way.
Hence, my original point.