You don't think town winning 45% of games is alright? Say mafia win 50% and then 5% go to weird 3rd parties like cult/SK. I think that's probably fine. Whether that statistic means much is another thing, since game balance veers wildly from game to game here.
I think there's some validity in that creating a fakeclaim is part of being scum but 'how it used to be' basically meant scum claimed the same type of roles every game due to town getting basically every common town PR
. (For instance how many games have no Bodyguard here?). A little more role variety would make scum fakeclaiims unneeded which might be a good thing. But that'd require more vt's and everyone hates them.