If you cut your teeth on Adobe Premiere Pro between 2010 and 2018, you remember the "Old Testament" of editing. It was a time of brutal rendering, the dreaded red "Media Pending" screen, and the absolute chaos of multi-cam audio sync.
Also, technology caught up. Modern cameras (and Tentacle Sync/Easyrig timecode boxes) made jamming timecode affordable. If you are using Timecode, PluralEyes is obsolete. Plural Eyes 2.0 for Adobe Premiere
Do you need it today? Probably not. Premiere’s "Create Multi-Camera Source Sequence" does 80% of what 2.0 did. But for that remaining 20%—the horrible drifting clips, the 4-camera shoot with no clapper board—I still keep a dusty installer on a backup drive. If you cut your teeth on Adobe Premiere