It seems to me that part of your case comes down to you distrusting Shakerag for claiming miller. Is this correct? How familiar are you with miller claim practice here?
To be fair that and the question of how Lenglon's fusion ability works. The initial vote and question was for a bit of pressure, then Lenglon went off the fuckin' handle, so I thought there was something to it. Evidently she's just a dick

Alternatively, we both assumed the other was being super srs with the voting and pressure.
Anyway, I'm reasonably familiar, though I've only played two games prior to this that it came up: firstly, one in which everyone got a bit freaked out by the Miller claim and investigated the Miller, and the other in which there was 2 Millers, which involved Leafsnail saying that the response to both of the kooks claiming in their first post meant they might try a fake Miller claim as scum to see what happened.
Shakerag was also present in the latter, and I recall the first game I played with him saying he liked to mess around with meta (he said his, but he's canny enough to do it with site meta too I imagine) so I was wary of that, plus Lenglon pretty much immediately hitting a player we can't investigate with a fusion ability and saying "nah bro it's okay I'm town, Shake's checks out" as though that even means anything.
Frankly, I think it's a medium- to long-term danger to town. If it's true, scum can deflect onto the Miller 'cause they aren't easily trusted, if it's not, well, piss all has happened this day, they might just coast by until it's too late. Especially since they have vote-stealing abilities too. Normally a town-aligned thing, but webadict's a dick too so that doesn't necessarily mean it is.