Also, SN users, I laugh at your imminent demise. Or something.
It all depends on whether or not the AI gets properly updated not to spam the SNs on the same turn, using 1-per-turn is more than enough for most SN-speedbows to work just fine.
So if 1.30 comes out with the singularity nerf added to SN, but without a corresponding AI upgrade, then it is a demise for the arena, making it very easy to farm.
OTOH, if the AI is updated for it properly, then it will not make a significant change in the meta, just a slight slow-down in TTW.