On the contrary!
Sustaining and supporting dual side operations makes Nu appear responsible for both sides.
Sell side only requires a refill of the sell side from time to time and already makes it clear that this is an exchange with reduced support.
Placing the message that the peg isn’t really ensured by Nu at those exchanges is easier this way imho.
Don’t just look at the NuBot operation. Try to draw a bigger picture.
…the NuBot operations alone would indeed be less complex in dual side mode as they require less interaction.