I don't think you can find 10 P5 coaches that are consistently satisfied with their team's effort.
I think fans' "goals" are often a product of selective memories. We romanticize the past without remembering the struggles. Coach Smith had down years. Coach Williams had down years. Nobody will ever go to 13 consecutive sweet sixteens again.
My assessment of Davis's improvement differs from yours. I see it in halftime adjustments. I see it in plays out of timeouts. I think it has made a difference in overall performance.
For me this season isn't nearly as frustrating as the Caleb Love/RJ Davis era. If you want to avoid frustration, I suggest a different hobby instead of college sports.
Several posts, including yours, have mentioned consistency. 18-23 year old American males is a bad place to look for consistency. As donbosco pointed out, COVID, NIL, and the portal have had a major impact. Kentucky, Kansas, UCLA, Purdue, and Michigan State have been inconsistent game to game and year to year. Carolina has won more ACC games in Coach Davis's tenure than all but 1 team. That is, if not consistent excellence, at least consistent really-goodness.
I get your frustration. I don't understand some lineup decisions. Last season I wanted more Withers at the 4 and Powell at the 3. I'm finally getting more Dixon and less Evans, but I still want more Powell. Lack of defense for 4 straight games. Poor 3FG and FT shooting. I understand, however, that there is only so much a coaching staff can do.
I also don't have any confidence that a new coach would be better. Who? Dusty May or TJ Otzelberger? Unless you think Mark Byington is ready and willing... Hard pass on the Nate Oats, Scott Drew and Todd Goldens of the world.
You may consider me a sunshine pumper. I don't. Maybe I have an advantage because i'm not surrounded by other Carolina fans. I'm not subject to groupthink in that regard. You guys (and ladies) are my Carolina family, and I appreciate the diversity of comments. I just think that this team is fun to watch, and I can't think of anyone realistically that I would rather have coaching this team than Coach Davis.