I don't think he's bad, I just think he is lacking severely in doing the basics as a midfielder. He is a player that relies on moments, occasional luck and fast-thinking team mates. Our midfield is just chaotic and it completely lacks any sort of control. Imagine if we could have someone physical, or another midfielder that knew how to control the tempo instead of Bruno. Sure, that player would not create as many chances as Bruno, but he'd make sure we have more consistent control in the midfield, which is going to result in more chances, anyway. We don't need one player to create tons of chances. We need control, similarly to how teams like City, Real Madrid and Barcelona control the midfield. Goals and chances come from everywhere.
He can have games where he bosses the game, but often that is against poor opposition. Most of the time, though, he relies on moments. You just can't expect to win trophies with a player like that. How many big games does he actually play well in? Very few.