Yup, this is really explain a lot (plus there's other commentator of previous chapter to summarizing the whole incident) and it become make more senseIt's good that a lot of the contentious stuff from ch.15 onward got explained.
No, the Viscount probably not killing himself, maybe got set up by Margrave or there's another reason. But well, it's political dispute so we as other spectators doesn't know the real reason underlying on viscount suicidekinda pissed off that it just glazes over the dude killing himself to wrap the arc up. Like, I wouldn't want a full on legal drama or anything but to see th dude get exposed would've been satisfying. Nope, just swept aside like "oh no big deal"