A higher NSR price will only exist if there’s enough BTC to support the NBT peg, and that BTC needs to be bought by selling NSR.
It’s worth taking advantage of the good demand for NSR to generate the required liquidity to hold a stable peg. This activity in turn will increase confidence in Nubits, and therefore the value of NSR.
If too few NSR are sold, there won’t be the required liquidity to provide a strong peg, which would undermine the Nubits peg and the value of NSR.
As the peg has only just been recovered, my guess is that building up a good stock of BTC to support the peg is necessary.