Wide scoreboards should be centered. It's not so much a problem with the NBC board as it doesn't take up
that much space, but as you can imagine, the local CSN broadcasts that still use the wider scoreboard and shove ads next to it can be aesthetically displeasing and overall distracting. Ads get centered on your TV.
It's an attempt to match Fox NFL and MLB scoreboards, which get away with being in a corner by being far more compact and simplistic. The problem is they didn't bother actually altering the scoreboards. NBC/SN at least separated their logo from the board itself. Local CSN broadcasts literally just moved their scoreboard from the center to the left, which also eats up the corner with your logo, which would be a good spot for powerplays etc.
Overall it's laziness leading to poor design.