A major problem is we were unaware of these concerns until final vote time.
Two other things:
Firstly, I didn't support the power bill until I got called on it, and then withdrew that support in a moderate hero way. I supported it because I failed to really follow the bill (Something I'm not proud of, but something which is also true of every senator just due to human nature) and therefore mistakenly assumed the bill would lead to something like the situation in other countries which have nationalised energy.
Secondly, if you read the senate rules, this really should not be about Tyrion being able to force through anything labor wants. For one thing, labor really isn't united enough to do that, especially given the shifting of the centre the game has seen over the last few years and months.
Even if we somehow united to push through energy nationalisation though, all it would take would be an occasional post by the right, because labor can not break cloture.
Ultimately this has to come down to whether you think the public's will of electing a labor VP for 4 months should be respected or not.