Yes, I assumed the point was to quarantine boots from current labels that are cloning Y! content.
Assuming the question was asked in good faith in those other threads, this might be helpful in understanding what material we can only get from boots, with no tape sources around (or in 2-3 cases, only inferior tape sources):
What recorders (or best sources) are exclusive to commercial boots?
It's somewhat out of date, but for the moment here's a simplified, half-updated version of the list:
1970-03-12 Hamburg
1970-04-29 Fillmore West (non-Randy Reels recorders)
1970-10-23 Santa Monica (LP-only recorder)
1970-11-22 Montreux (Smoking Blues tracks)
1970-11-28 Saarbrücken
1971-01-17 Roundhouse
1971-02-25 Hamburg (M-502 is needed for all but the last 2 tracks; master tape confirmed destroyed)
1971-02-26 Offenbach (LP-only recorder)
1971-04-03 Rotterdam (LP-only recorder)
1971-06-26 Amsterdam (LP-only recorder)
1971-08-06 Hakone (boot CD only)
1971-08-07 Hakone (multiple recorders are on boot LP or CD only)
1971-08-09 Osaka (Rec. 2)
1971-09-18 Montreux (FM broadcast source)
1971-11-10 Quebec City (boot CDs appear to be master clones)
1972-02-20 Rainbow Theatre (Best of Tour 72 LP)
1972-03-07 Tokyo (Recs. 3 & 4, best copies of Rec. 1)
1972-03-08 Osaka - Recs. 3 & 5
1972-03-09 Osaka - Recs. 2 & 3 (both ASOS only)
1972-03-13 Sapporo - Rec. 3
1972-04-27 Detroit (War in the Head + Pandora's Box)
1972-05-21 Germersheim (LP-only recorder)
1972-09-22 Hollywood Bowl (LP-only recorder)
1972-09-23 Winterland (boot CD only)
1972-11-15 Böblingen (LP-only recorder)
1973-11-04 Rainbow Theatre (late show)
(Obscured at the Rainbow is still best)
1974-11-19 Trentham Gardens (Set 1 is on LP only)
1975-04-21 San Diego (band-sanctioned recording on boot CD and LP)
1975-04-xx? (unknown Echoes on California Soundboard LP, possibly Denver or Tucson)
1977-01-23 Dortmund (LP-only recorder)
1977-01-27 Frankfurt (LP-only recorder)
There might be more, and certainly post-1977 there are, but I'm not tracking 1987 and later tours.