The Flatt/Scruggs with Mother Maybelle was lovely. Scruggs has always been a tasteful musician. We met him one morning at WGN after sleeping all night on their lawn. He was gracious and modest.

His followers have often emphasized technical playing and speed at the expense of the song.
Bluegrass doesn't have to be played at breakneck speed though this seems to be what the public demands. You can dance to it at a reasonable tempo. Virtuosity is the name of the game
for the most part. The playing is often slick.

Monroe kept Scruggs off of the Opry when they split. As Ken Burns pointed out, the Opry was a way of selling insurance. Even though it was commercialized, it had some wonderful talent. Many supporting musicians were tasteful and well-developed. Each artist had a unique manner of expression and knew how to entertain. Very few musicians played and sang without the backing of others.

Pete gave concerts with just his banjo and Burl Ives with just his guitar. This was true of Josh White, Richard Dyer-Benet, Jean Ritchie, Doc Watson, Leadbelly and lesser known banjo players like Clarence Ashley, Rufus Crisp, Buell Kazee, who used their instrument as an expressive accompaniment instrument.

It's almost expected that a singer would be backed by a band, today. A voice with a simple backing of an instrument is not found popular today. The joy of sitting, singing and playing for yourself does not require a concert stage.

Audiences have become production oriented in their tastes in music. This means that when they make music for themselves, some are frustrated because their song accompaniment doesn't sound like the high production value of the recording of the song they like.

On this website, unaccompanied singing, just voice, is appreciated but is an acquired taste.
I learned to like it when I heard American field recordings from the Library of Congress.

Sitting and making music, playing and singing simply and heartfelt is one of the greatest joys in life. Playing and singing with other sensitive musicians is another.

To paraphrase Shakespeare, "the song's the thing......."