Mac PMS 1.29.1.6276 Crashed (First Ever), Seems Corrupted Library & or Host Files—1.28 Now Unstable

PMS for Mac 1.32.4.7195
Plex for Apple TV 8.21 (Apple TV 4K, appleTVos 15.6)
Plex for iOS 8.20 (iOS 14.8.1, iPadOS 14.8)
Plex for Mac 1.71.1.3888 (Mac Studio (2022) M1 Max, macOS 12.6.6)

I was just about to proclaim this topic solved, but [dung] happened.

The Plex [player] for Apple TV app version 8.21 appears to again be a PoS, again behaving somewhat like a previous dung version 8.6, and apparently causing PMS to become FUBAR, forcing Apple TV hardware restart.

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(I will separately send a link to Plex staff to PMS & Plex player logs and database file.)

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For full details, please see:

Plex for Apple TV app 8.21 AGAIN (appears) to Dung; Repeating Problems like 8.6