Music playlists out of sync between Mac and iPhone

I have a dozen Smart Playlists in Music, created on my MacBook Pro (Ventura). Most of them just limit the list to songs with less than a certain play count to ensure that I hear all of a genre or artist and not the same songs over and over. At the moment I'm listening to a Holiday playlist.

The problem is that the Music app on my iPhone 14 Pro (16.2) shows fewer songs than are in listed in Music on the Map. At the moment, Music on the iPhone shows one (1) song, while the same playlist on the Mac shows fifteen (15).

A change to the playlist parameters on the Mac, is immediately reflected on the iPhone. For example changing the criteria from Plays < 1, to Plays < 2, the playlist shows 146 songs on the Mac, and 144 on the iPhone. Close, but not correct. Changing it back to Plays < 1, the Mac again shows fifteen (15) and the iPhone shows one (1). So they sync immediately, but they don't agree in how many songs are in the playlist.

All of the songs have an iCloud status of Apple Music. The only criteria in the playlist is the play count and genre.

Shouldn't the playlist have the same songs on both devices?