Those people inviting you might see you as their personal ATM machine--watch out for that. 

The fact that newbies are the ones making the scam accusations doesn't surprise me.  Even if you were a senior member and got scammed, you might have a very good reason not to broadcast your gambling habits to everyone here, so creating a new account for the accusation might be appropriate.  In any case, that's not something I see as sinister.

To answer OP's question, I'd say that if cloudbet was proven to be a scam it'd be ill-advised for members to continue to advertise for them.  We've had this situation before with ICOs and other casinos, if I'm not mistaken.  I ditched a sig campaign in the middle of it a couple of years ago after cryptodevil made a scam accusation against them (I can't recall the name of it).  It just so happened that the proof cryptodevil presented at the time of my exit turned out to be insufficient, but I definitely did not want my reputation linked to anything fishy being advertised in my signature space. 

That said, I don't know if cloudbet has unequivocally been shown to be a scam.  Yes, they have accusations against them, but a lot of these businesses do.  Is the community ready to tag anyone promoting Yobit?  I know their campaign isn't active, but my question is...how much proof is enough?