Can't really agree on this at all.
I'd prefer to see an imperfect attempt to implement the feature > it not being done at all. Wolfwire's arm doors aren't the best you'll ever see, but they're also certainly far from a poor implementation (eg Generations Brainstorm v1).
As above, the forearms on this toy are particularly bad. They're hollow and the fists have no hard stopping point once they're folded out. There's a small notch you can feel they're meant to click into when they're straight but it's not the strongest of connections. It certainly doesn't hold in any useful way if you try and use Highbrow with any of the Titan Master companion vehicles in weapon mode.