I really doubt your bad speculation will cause you any bad reputation on utrum I think people will be able to see all your predictions and then maybe decide to either follow you or just restrain so Is still bad but not that bad I will suggest you just have fact backing for your things
I don't think bad speculation will causing a bad reputation in the platform since it does not relate between of them. A bad speculation might cause you to gain lower reward.
but it might. let's say you have many followers. Then you give or show them your predictions. of course they will believe in you because they are your followers. it will put a hype then if you keep failing them you lose their trust and might give you bad reputations. I came up with this idea because of that guy who predicted that btc will reach certain amount on 2020 if it fails he will cut his D.