The Mummy you can lay at the novice director he was out of his depth & caused big issues when they had to reshoot expensive scenes again. Cruise saved the movie from being even worse than it was! Christopher McQuarrie was also heavily rumoured to have been hired to fix a few things at the last moment to salvage something from a complete disaster.
Not according to several internet articles.
Tom Cruise's fiddling may have been responsible for the sinking of his would-be franchise-starter The Mummy, according to reports. While the big-budget horror reboot hasn't been an enormous failure at the global box office, it severely underperformed in the United States, throwing an early spanner in the works for a 'Dark Universe' of films tying together such vintage horror heavyweights as the Invisible Man and the Bride of Frankenstein.
According to Variety, The Mummy radically changed once Cruise signed onto the film, the superstar demanding creative control over every aspect of the production, hiring longtime collaborators to work on the script, and significantly altering the film's plot to give him more prominence in the narrative – at the expense of the actually Mummy.
Once production was over, Cruise personally cut the film together alongside his longtime editor Andrew Mondshein, after he and Universal both decided that the project wasn't working. But this reportedly only added to concern amongst Universal bosses, who grew panicked that the star was "turning a horror film into a Cruise infomercial.
Source
