You get the point? Start learning the Gregorian propers now, if you haven't already. It might take a bit of time to be fruitful but it will one day. But you have to start at some point.
The 4 options were the result of Sacrosanctum Concilium's unfunded mandate for a Missa Cantata. Since funding and musicians weren't there, what developed was a porting of Option 4 from the low mass with hymns, with 2 and 3 being ported from high masses with inadequate musical forces. This got further altered by FCAP culture, to privilege congregational singing over congregational listening.
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