If you're playing razz would the best low hand not, ipso facto, be the best hand. So would the best hand at razz not always win too

Yes - but i didnt say the best low hand (i.e. the worst hand) i said just the best hand. In razz its worst hand wins.
Strictly speaking yes, the best razz hand wins in razz - not the best poker hand which i believe is what you were talking about in your original quote

(we could go on forever about this.......but i got work to do

)