What's the 132 precedent?
As part of VT-100 compatibility, many subsequent terminals also supported 132 column mode.
I know the DEC VT340 was capable of 132 columns, as was an Apple II with a Videx Ultraterm card and a suitable (hi-res) monitor.
There are probably even more examples, but those two are what came to mind first.
I always kind of figured "132" was some arbitrary programmer decision, never knew it dated to old terminals. At least I recognize 24 and 43 as the number of lines old text modes (on, eg, VGA) had.