Uhh not really. They're usually not well-founded, but they're not actually completely random. And if you believe the lynches are random, then why aren't you randomvoting to contribute? Even if RVS is incredibly stupid you aren't going to get it anywhere by saying "meh RVS is incredibly stupid" and not voting.
Yes, you do, if you actually start some sort of well-reasoned discussion instead of voting. Could be about current random votes, could be about past games, could be about playstyle. But in general, not voting during RVS is not as useless as everyone likely to claim it is.
The real point of D1 though is to give us a starting point for information for D2, both from the D1 lynch and, as Sodium Cyanate mentioned, from D1 wagonalysis. Thus, it is ultimately irrelevant whether RVS takes place or not, what is important is that some sort of wagon or wagons form and that someone gets lynched D1, preferably someone who is Scum.
Not sure what to make of Serela, but it feels more like just him being an idiot so far than anything else - Scum gain no advantage from making such a statement, at least this early-on in the game, and attract WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY too much attention onto themselves to trade for it.
Ecthel - honestly, so far reads like just a noob. See
MEIN MAIDENKAMPF for what one should do with newbies who make stupid mistakes, etc.
Everyone else - we're not even on the second page and barely 12 hours into D1, holy god you guize post too much irrelevant nonsense too fast :V