the Boston police, not exactly an organization with avant-garde sensibilities, issued Stravinsky a warning
https://www.openculture.com/2025/07/igor-stravinskys-illegal-arrangement-of-the-star-spangled-banner.html
Quite simply I think it's only the desire to have the LP/cover in as close a condition as when originally issued.
The Obi is part of the original artifact so collectors like to have them. I see no difference between desiring that as to desiring original inner sleeves, inserts etc.
And yes, this isn't about the music (cue that chorus) it's about the complete artifact in as close a condition when originally issued as possible.