Hugh Jarse....
I have crewed a D8 300 MANY a time with only lil old me and my capped flight of 36 pax.
I have known occasions where a 146-100 has been crewed with only 1 FA when crew numbers have been desperately short.
It happens and apparentally is allowed to happen.
CAO 20.16.3 - Crew Complement
FA req. are:
15 or fewer PASSENGERS - no FA
16 - 36 PASSENGERS - 1 FA
More than 36 PASSENGERS but not more than 216 - at least 1 FA for every 36 PASSENGERS or part there of.
It does not say pax SEATS or based on capacity of the A/C
Sorry honey but you're wrong